课后习题与答案(英文版)
国际财务管理(英文版)课后习题答案9
CHAPTER 8 MANAGEMENT OF TRANSACTION EXPOSURE SUGGESTED ANSWERS AND SOLUTIONS TO END-OF-CHAPTER QUESTIONS ANDPROBLEMSQUESTIONS1. How would you define transaction exposure? How is it different from economic exposure?Answer: Transaction exposure is the sensitivity of realized domestic currency values of the firm‟s contractual cash flows denominated in foreign currencies to unexpected changes in exchange rates. Unlike economic exposure, transaction exposure is well-defined and short-term.2. Discuss and compare hedging transaction exposure using the forward contract vs. money market instruments. When do the alternative hedging approaches produce the same result?Answer: Hedging transaction exposure by a forward contract is achieved by selling or buying foreign currency receivables or payables forward. On the other hand, money market hedge is achieved by borrowing or lending the present value of foreign currency receivables or payables, thereby creating offsetting foreign currency positions. If the interest rate parity is holding, the two hedging methods are equivalent.3. Discuss and compare the costs of hedging via the forward contract and the options contract.Answer: There is no up-front cost of hedging by forward contracts. In the case of options hedging, however, hedgers should pay the premiums for the contracts up-front. The cost of forward hedging, however, may be realized ex post when the hedger regrets his/her hedging decision.4. What are the advantages of a currency options contract as a hedging tool compared with the forward contract?Answer: The main advantage of using options contracts for hedging is that the hedger can decide whether to exercise options upon observing the realized future exchange rate. Options thus provide a hedge against ex post regret that forward hedger might have to suffer. Hedgers can only eliminate the downside risk while retaining the upside potential.5. Suppose your company has purchased a put option on the German mark to manage exchange exposure associated with an account receivable denominated in that currency. In this case, your company can be said to have an …insurance‟ policy on its receivable. Explain in what sense this is so.Answer: Your company in this case knows in advance that it will receive a certain minimum dollar amount no matter what might happen to the $/€exchange rate. Furthermore, if the German mark appreciates, your company will benefit from the rising euro.6. Recent surveys of corporate exchange risk management practices indicate that many U.S. firms simply do not hedge. How would you explain this result?Answer: There can be many possible reasons for this. First, many firms may feel that they are not really exposed to exchange risk due to product diversification, diversified markets for their products, etc. Second, firms may be using self-insurance against exchange risk. Third, firms may feel that shareholders can diversify exchange risk themselves, rendering corporate risk management unnecessary.7. Should a firm hedge? Why or why not?Answer: In a perfect capital market, firms may not need to hedge exchange risk. But firms can add to their value by hedging if markets are imperfect. First, if management knows about the firm‟s exposure better than shareholders, the firm, not its shareholders, should hedge. Second, firms may be able to hedge at a lower cost. Third, if default costs are significant, corporate hedging can be justifiable because it reduces the probability of default. Fourth, if the firm faces progressive taxes, it can reduce tax obligations by hedging which stabilizes corporate earnings.8. Using an example, discuss the possible effect of hedging on a firm‟s tax obligations.Answer: One can use an example similar to the one presented in the chapter.9. Explain contingent exposure and discuss the advantages of using currency options to manage this type of currency exposure.Answer: Companies may encounter a situation where they may or may not face currency exposure. In this situation, companies need options, not obligations, to buy or sell a given amount of foreign exchange they may or may not receive or have to pay. If companies either hedge using forward contracts or do not hedge at all, they may face definite currency exposure.10. Explain cross-hedging and discuss the factors determining its effectiveness.Answer: Cross-hedging involves hedging a position in one asset by taking a position in another asset. The effectiveness of cross-hedging would depend on the strength and stability of the relationship between the two assets.PROBLEMS1. Cray Research sold a super computer to the Max Planck Institute in Germany on credit and invoiced €10 million payable in six months. Currently, the six-month forward exchange rate is $1.10/€ and the foreign exchange advisor for Cray Research predicts that the spot rate is likely to be $1.05/€ in six months.(a) What is the expected gain/loss from the forward hedging?(b) If you were the financial manager of Cray Research, would you recommend hedging this euro receivable? Why or why not?(c) Suppose the foreign exchange advisor predicts that the future spot rate will be the same as the forward exchange rate quoted today. Would you recommend hedging in this case? Why or why not?Solution: (a) Expected gain($) = 10,000,000(1.10 – 1.05)= 10,000,000(.05)= $500,000.(b) I would recommend hedging because Cray Research can increase the expected dollar receipt by $500,000 and also eliminate the exchange risk.(c) Since I eliminate risk without sacrificing dollar receipt, I still would recommend hedging.2. IBM purchased computer chips from NEC, a Japanese electronics concern, and was billed ¥250 million payable in three months. Currently, the spot exchange rate is ¥105/$ and the three-month forward rate is ¥100/$. The three-month money market interest rate is 8 percent per annum in the U.S. and 7 percent per annum in Japan. The management of IBM decided to use the money market hedge to deal with this yen account payable.(a) Explain the process of a money market hedge and compute the dollar cost of meeting the yen obligation.(b) Conduct the cash flow analysis of the money market hedge.Solution: (a). Let‟s first compute the PV of ¥250 million, i.e.,250m/1.0175 = ¥245,700,245.7So if the above yen amount is invested today at the Japanese interest rate for three months, the maturity value will be exactly equal to ¥25 million which is the amount of payable.To buy the above yen amount today, it will cost:$2,340,002.34 = ¥250,000,000/105.The dollar cost of meeting this yen obligation is $2,340,002.34 as of today.(b)___________________________________________________________________Transaction CF0 CF1____________________________________________________________________1. Buy yens spot -$2,340,002.34with dollars ¥245,700,245.702. Invest in Japan - ¥245,700,245.70 ¥250,000,0003. Pay yens - ¥250,000,000Net cash flow - $2,340,002.34____________________________________________________________________3. You plan to visit Geneva, Switzerland in three months to attend an international business conference. You expect to incur the total cost of SF 5,000 for lodging, meals and transportation during your stay. As of today, the spot exchange rate is $0.60/SF and the three-month forward rate is $0.63/SF. You can buy the three-month call option on SF with the exercise rate of $0.64/SF for the premium of $0.05 per SF. Assume that your expected future spot exchange rate is the same as the forward rate. The three-month interest rate is 6 percent per annum in the United States and 4 percent per annum in Switzerland.(a) Calculate your expected dollar cost of buying SF5,000 if you choose to hedge via call option on SF.(b) Calculate the future dollar cost of meeting this SF obligation if you decide to hedge using a forward contract.(c) At what future spot exchange rate will you be indifferent between the forward and option market hedges?(d) Illustrate the future dollar costs of meeting the SF payable against the future spot exchange rate under both the options and forward market hedges.Solution: (a) Total option premium = (.05)(5000) = $250. In three months, $250 is worth $253.75 = $250(1.015). At the expected future spot rate of $0.63/SF, which is less than the exercise price, you don‟t expect to exercise options. Rather, you expect to buy Swiss franc at $0.63/SF. Since you are going to buy SF5,000, you expect to spend $3,150 (=.63x5,000). Thus, the total expected cost of buying SF5,000 will be the sum of $3,150 and $253.75, i.e., $3,403.75.(b) $3,150 = (.63)(5,000).(c) $3,150 = 5,000x + 253.75, where x represents the break-even future spot rate. Solving for x, we obtain x = $0.57925/SF. Note that at the break-even future spot rate, options will not be exercised.(d) If the Swiss franc appreciates beyond $0.64/SF, which is the exercise price of call option, you will exercise the option and buy SF5,000 for $3,200. The total cost of buying SF5,000 will be $3,453.75 = $3,200 + $253.75.This is the maximum you will pay.4. Boeing just signed a contract to sell a Boeing 737 aircraft to Air France. Air France will be billed €20 million which is payable in one year. The current spot exchange rate is $1.05/€ and the one -year forward rate is $1.10/€. The annual interest rate is 6.0% in the U.S. and5.0% in France. Boeing is concerned with the volatile exchange rate between the dollar and the euro and would like to hedge exchange exposure. (a) It is considering two hedging alternatives: sell the euro proceeds from the sale forward or borrow euros from the Credit Lyonnaise against the euro receivable. Which alternative would you recommend? Why?(b) Other things being equal, at what forward exchange rate would Boeing be indifferent between the two hedging methods?Solution: (a) In the case of forward hedge, the future dollar proceeds will be (20,000,000)(1.10) = $22,000,000. In the case of money market hedge (MMH), the firm has to first borrow the PV of its euro receivable, i.e., 20,000,000/1.05 =€19,047,619. Then the firm should exchange this euro amount into dollars at the current spot rate to receive: (€19,047,619)($1.05/€) = $20,000,000, which can be invested at the dollar interest rate for one year to yield:$20,000,000(1.06) = $21,200,000.Clearly, the firm can receive $800,000 more by using forward hedging.(b) According to IRP, F = S(1+i $)/(1+i F ). Thus the “indifferent” forward rate will be:F = 1.05(1.06)/1.05 = $1.06/€. $ Cost Options hedge Forward hedge $3,453.75 $3,150 0 0.579 0.64 (strike price) $/SF$253.755. Suppose that Baltimore Machinery sold a drilling machine to a Swiss firm and gave the Swiss client a choice of paying either $10,000 or SF 15,000 in three months.(a) In the above example, Baltimore Machinery effectively gave the Swiss client a free option to buy up to $10,000 dollars using Swiss franc. What is the …implied‟ exercise exchange rate?(b) If the spot exchange rate turns out to be $0.62/SF, which currency do you think the Swiss client will choose to use for payment? What is the value of this free option for the Swiss client?(c) What is the best way for Baltimore Machinery to deal with the exchange exposure?Solution: (a) The implied exercise (price) rate is: 10,000/15,000 = $0.6667/SF.(b) If the Swiss client chooses to pay $10,000, it will cost SF16,129 (=10,000/.62). Since the Swiss client has an option to pay SF15,000, it will choose to do so. The value of this option is obviously SF1,129 (=SF16,129-SF15,000).(c) Baltimore Machinery faces a contingent exposure in the sense that it may or may not receive SF15,000 in the future. The firm thus can hedge this exposure by buying a put option on SF15,000.6. Princess Cruise Company (PCC) purchased a ship from Mitsubishi Heavy Industry. PCC owes Mitsubishi Heavy Industry 500 million yen in one year. The current spot rate is 124 yen per dollar and the one-year forward rate is 110 yen per dollar. The annual interest rate is 5% in Japan and 8% in the U.S. PCC can also buy a one-year call option on yen at the strike price of $.0081 per yen for a premium of .014 cents per yen.(a) Compute the future dollar costs of meeting this obligation using the money market hedge and the forward hedges.(b) Assuming that the forward exchange rate is the best predictor of the future spot rate, compute the expected future dollar cost of meeting this obligation when the option hedge is used.(c) At what future spot rate do you think PCC may be indifferent between the option and forward hedge?Solution: (a) In the case of forward hedge, the dollar cost will be 500,000,000/110 = $4,545,455. In the case of money market hedge, the future dollar cost will be: 500,000,000(1.08)/(1.05)(124)= $4,147,465.(b) The option premium is: (.014/100)(500,000,000) = $70,000. Its future value will be $70,000(1.08) = $75,600.At the expected future spot rate of $.0091(=1/110), which is higher than the exercise of $.0081, PCC will exercise its call option and buy ¥500,000,000 for $4,050,000 (=500,000,000x.0081).The total expected cost will thus be $4,125,600, which is the sum of $75,600 and $4,050,000.(c) When the option hedge is used, PCC will spend “at most” $4,125,000. On the other hand, when the forward hedging is used, PCC will have to spend $4,545,455 regardless of the future spot rate. This means that the options hedge dominates the forward hedge. At no future spot rate, PCC will be indifferent between forward and options hedges.7. Airbus sold an aircraft, A400, to Delta Airlines, a U.S. company, and billed $30 million payable in six months. Airbus is concerned with the euro proceeds from international sales and would like to control exchange risk. The current spot exchang e rate is $1.05/€ and six-month forward exchange rate is $1.10/€ at the moment. Airbus can buy a six-month put option on U.S. dollars with a strike price of €0.95/$ for a premium of €0.02 per U.S. dollar. Currently, six-month interest rate is 2.5% in the euro zone and 3.0% in the U.S.pute the guaranteed euro proceeds from the American sale if Airbus decides to hedge using aforward contract.b.If Airbus decides to hedge using money market instruments, what action does Airbus need to take?What would be the guaranteed euro proceeds from the American sale in this case?c.If Airbus decides to hedge using put options on U.S. dollars, what would be the …expected‟ europroceeds from the American sale? Assume that Airbus regards the current forward exchange rate as an unbiased predictor of the future spot exchange rate.d.At what future spot exchange rate do you think Airbus will be indifferent between the option andmoney market hedge?Solution:a. Airbus will sell $30 million forward for €27,272,727 = ($30,000,000) / ($1.10/€).b. Airbus will borrow the present value of the dollar receivable, i.e., $29,126,214 = $30,000,000/1.03, and then sell the dollar proceeds spot for euros: €27,739,251. This is the euro amount that Airbus is going to keep.c. Since th e expected future spot rate is less than the strike price of the put option, i.e., €0.9091< €0.95, Airbus expects to exercise the option and receive €28,500,000 = ($30,000,000)(€0.95/$). This is gross proceeds. Airbus spent €600,000 (=0.02x30,000,000) upfr ont for the option and its future cost is equal to €615,000 = €600,000 x 1.025. Thus the net euro proceeds from the American sale is €27,885,000, which is the difference between the gross proceeds and the option costs.d. At the indifferent future spot rate, the following will hold:€28,432,732 = S T (30,000,000) - €615,000.Solving for S T, we obtain the “indifference” future spot exchange rate, i.e., €0.9683/$, or $1.0327/€.Note that €28,432,732 is the future value of the proceeds under money market hed ging:€28,432,732 = (€27,739,251) (1.025).Suggested solution for Mini Case: Chase Options, Inc.[See Chapter 13 for the case text]Chase Options, Inc.Hedging Foreign Currency Exposure Through Currency OptionsHarvey A. PoniachekI. Case SummaryThis case reviews the foreign exchange options market and hedging. It presents various international transactions that require currency options hedging strategies by the corporations involved. Seven transactions under a variety of circumstances are introduced that require hedging by currency options. The transactions involve hedging of dividend remittances, portfolio investment exposure, and strategic economic competitiveness. Market quotations are provided for options (and options hedging ratios), forwards, and interest rates for various maturities.II. Case Objective.The case introduces the student to the principles of currency options market and hedging strategies. The transactions are of various types that often confront companies that are involved in extensive international business or multinational corporations. The case induces students to acquire hands-on experience in addressing specific exposure and hedging concerns, including how to apply various market quotations, which hedging strategy is most suitable, and how to address exposure in foreign currency through cross hedging policies.III. Proposed Assignment Solution1. The company expects DM100 million in repatriated profits, and does not want the DM/$ exchange rate at which they convert those profits to rise above 1.70. They can hedge this exposure using DM put options with a strike price of 1.70. If the spot rate rises above 1.70, they can exercise the option, while ifthat rate falls they can enjoy additional profits from favorable exchange rate movements.To purchase the options would require an up-front premium of:DM 100,000,000 x 0.0164 = DM 1,640,000.With a strike price of 1.70 DM/$, this would assure the U.S. company of receiving at least:DM 100,000,000 – DM 1,640,000 x (1 + 0.085106 x 272/360)= DM 98,254,544/1.70 DM/$ = $57,796,791by exercising the option if the DM depreciated. Note that the proceeds from the repatriated profits are reduced by the premium paid, which is further adjusted by the interest foregone on this amount.However, if the DM were to appreciate relative to the dollar, the company would allow the option to expire, and enjoy greater dollar proceeds from this increase.Should forward contracts be used to hedge this exposure, the proceeds received would be:DM100,000,000/1.6725 DM/$ = $59,790,732,regardless of the movement of the DM/$ exchange rate. While this amount is almost $2 million more than that realized using option hedges above, there is no flexibility regarding the exercise date; if this date differs from that at which the repatriate profits are available, the company may be exposed to additional further current exposure. Further, there is no opportunity to enjoy any appreciation in the DM.If the company were to buy DM puts as above, and sell an equivalent amount in calls with strike price 1.647, the premium paid would be exactly offset by the premium received. This would assure that the exchange rate realized would fall between 1.647 and 1.700. If the rate rises above 1.700, the company will exercise its put option, and if it fell below 1.647, the other party would use its call; for any rate in between, both options would expire worthless. The proceeds realized would then fall between:DM 100,00,000/1.647 DM/$ = $60,716,454andDM 100,000,000/1.700 DM/$ = $58,823,529.This would allow the company some upside potential, while guaranteeing proceeds at least $1 million greater than the minimum for simply buying a put as above.Buy/Sell OptionsDM/$Spot Put Payoff “Put”Profits Call Payoff“Call”Profits Net Profit1.60 (1,742,846) 0 1,742,846 60,716,454 60,716,454 1.61 (1,742,846) 0 1,742,846 60,716,454 60,716,454 1.62 (1,742,846) 0 1,742,846 60,716,454 60,716,454 1.63 (1,742,846) 0 1,742,846 60,716,454 60,716,454 1.64 (1,742,846) 0 1,742,846 60,716,454 60,716,454 1.65 (1,742,846) 60,606,061 1,742,846 0 60,606,061 1.66 (1,742,846) 60,240,964 1,742,846 0 60,240,964 1.67 (1,742,846) 59,880,240 1,742,846 0 59,880,240 1.68 (1,742,846) 59,523,810 1,742,846 0 59,523,810 1.69 (1,742,846) 59,171,598 1,742,846 0 59,171,598 1.70 (1,742,846) 58,823,529 1,742,846 0 58,823,529 1.71 (1,742,846) 58,823,529 1,742,846 0 58,823,529 1.72 (1,742,846) 58,823,529 1,742,846 0 58,823,529 1.73 (1,742,846) 58,823,529 1,742,846 0 58,823,529 1.74 (1,742,846) 58,823,529 1,742,846 0 58,823,529 1.75 (1,742,846) 58,823,529 1,742,846 0 58,823,529 1.76 (1,742,846) 58,823,529 1,742,846 0 58,823,529 1.77 (1,742,846) 58,823,529 1,742,846 0 58,823,529 1.78 (1,742,846) 58,823,529 1,742,846 0 58,823,529 1.79 (1,742,846) 58,823,529 1,742,846 0 58,823,529 1.80 (1,742,846) 58,823,529 1,742,846 0 58,823,529 1.81 (1,742,846) 58,823,529 1,742,846 0 58,823,529 1.82 (1,742,846) 58,823,529 1,742,846 0 58,823,529 1.83 (1,742,846) 58,823,529 1,742,846 0 58,823,529 1.84 (1,742,846) 58,823,529 1,742,846 0 58,823,529 1.85 (1,742,846) 58,823,529 1,742,846 0 58,823,529Since the firm believes that there is a good chance that the pound sterling will weaken, locking them into a forward contract would not be appropriate, because they would lose the opportunity to profit from this weakening. Their hedge strategy should follow for an upside potential to match their viewpoint. Therefore, they should purchase sterling call options, paying a premium of:5,000,000 STG x 0.0176 = 88,000 STG.If the dollar strengthens against the pound, the firm allows the option to expire, and buys sterling in the spot market at a cheaper price than they would have paid for a forward contract; otherwise, the sterling calls protect against unfavorable depreciation of the dollar.Because the fund manager is uncertain when he will sell the bonds, he requires a hedge which will allow flexibility as to the exercise date. Thus, options are the best instrument for him to use. He can buy A$ puts to lock in a floor of 0.72 A$/$. Since he is willing to forego any further currency appreciation, he can sell A$ calls with a strike price of 0.8025 A$/$ to defray the cost of his hedge (in fact he earns a net premium of A$ 100,000,000 x (0.007234 –0.007211) = A$ 2,300), while knowing that he can‟t receive less than 0.72 A$/$ when redeeming his investment, and can benefit from a small appreciation of the A$.Example #3:Problem: Hedge principal denominated in A$ into US$. Forgo upside potential to buy floor protection.I. Hedge by writing calls and buying puts1) Write calls for $/A$ @ 0.8025Buy puts for $/A$ @ 0.72# contracts needed = Principal in A$/Contract size100,000,000A$/100,000 A$ = 1002) Revenue from sale of calls = (# contracts)(size of contract)(premium)$75,573 = (100)(100,000 A$)(.007234 $/A$)(1 + .0825 195/360)3) Total cost of puts = (# contracts)(size of contract)(premium)$75,332 = (100)(100,000 A$)(.007211 $/A$)(1 + .0825 195/360)4) Put payoffIf spot falls below 0.72, fund manager will exercise putIf spot rises above 0.72, fund manager will let put expire5) Call payoffIf spot rises above .8025, call will be exercised If spot falls below .8025, call will expire6) Net payoffSee following Table for net payoff Australian Dollar Bond HedgeStrikePrice Put Payoff “Put”Principal Call Payoff“Call”Principal Net Profit0.60 (75,332) 72,000,000 75,573 0 72,000,2410.61 (75,332) 72,000,000 75,573 0 72,000,2410.62 (75,332) 72,000,000 75,573 0 72,000,2410.63 (75,332) 72,000,000 75,573 0 72,000,2410.64 (75,332) 72,000,000 75,573 0 72,000,2410.65 (75,332) 72,000,000 75,573 0 72,000,2410.66 (75,332) 72,000,000 75,573 0 72,000,2410.67 (75,332) 72,000,000 75,573 0 72,000,2410.68 (75,332) 72,000,000 75,573 0 72,000,2410.69 (75,332) 72,000,000 75,573 0 72,000,2410.70 (75,332) 72,000,000 75,573 0 72,000,2410.71 (75,332) 72,000,000 75,573 0 72,000,2410.72 (75,332) 72,000,000 75,573 0 72,000,2410.73 (75,332) 73,000,000 75,573 0 73,000,2410.74 (75,332) 74,000,000 75,573 0 74,000,2410.75 (75,332) 75,000,000 75,573 0 75,000,2410.76 (75,332) 76,000,000 75,573 0 76,000,2410.77 (75,332) 77,000,000 75,573 0 77,000,2410.78 (75,332) 78,000,000 75,573 0 78,000,2410.79 (75,332) 79,000,000 75,573 0 79,000,2410.80 (75,332) 80,000,000 75,573 0 80,000,2410.81 (75,332) 0 75,573 80,250,000 80,250,2410.82 (75,332) 0 75,573 80,250,000 80,250,2410.83 (75,332) 0 75,573 80,250,000 80,250,2410.84 (75,332) 0 75,573 80,250,000 80,250,2410.85 (75,332) 0 75,573 80,250,000 80,250,2414. The German company is bidding on a contract which they cannot be certain of winning. Thus, the need to execute a currency transaction is similarly uncertain, and using a forward or futures as a hedge is inappropriate, because it would force them to perform even if they do not win the contract.Using a sterling put option as a hedge for this transaction makes the most sense. For a premium of:12 million STG x 0.0161 = 193,200 STG,they can assure themselves that adverse movements in the pound sterling exchange rate will not diminish the profitability of the project (and hence the feasibility of their bid), while at the same time allowing the potential for gains from sterling appreciation.5. Since AMC in concerned about the adverse effects that a strengthening of the dollar would have on its business, we need to create a situation in which it will profit from such an appreciation. Purchasing a yen put or a dollar call will achieve this objective. The data in Exhibit 1, row 7 represent a 10 percent appreciation of the dollar (128.15 strike vs. 116.5 forward rate) and can be used to hedge against a similar appreciation of the dollar.For every million yen of hedging, the cost would be:Yen 100,000,000 x 0.000127 = 127 Yen.To determine the breakeven point, we need to compute the value of this option if the dollar appreciated 10 percent (spot rose to 128.15), and subtract from it the premium we paid. This profit would be compared with the profit earned on five to 10 percent of AMC‟s sales (which would be lost as a result of the dollar appreciation). The number of options to be purchased which would equalize these two quantities would represent the breakeven point.Example #5:Hedge the economic cost of the depreciating Yen to AMC.If we assume that AMC sales fall in direct proportion to depreciation in the yen (i.e., a 10 percent decline in yen and 10 percent decline in sales), then we can hedge the full value of AMC‟s sales. I have assumed $100 million in sales.1) Buy yen puts# contracts needed = Expected Sales *Current ¥/$ Rate / Contract size9600 = ($100,000,000)(120¥/$) / ¥1,250,0002) Total Cost = (# contracts)(contract size)(premium)$1,524,000 = (9600)( ¥1,250,000)($0.0001275/¥)3) Floor rate = Exercise – Premium128.1499¥/$ = 128.15¥/$ - $1,524,000/12,000,000,000¥4) The payoff changes depending on the level of the ¥/$ rate. The following table summarizes thepayoffs. An equilibrium is reached when the spot rate equals the floor rate.AMC ProfitabilityYen/$ Spot Put Payoff Sales Net Profit 120 (1,524,990) 100,000,000 98,475,010 121 (1,524,990) 99,173,664 97,648,564 122 (1,524,990) 98,360,656 96,835,666 123 (1,524,990) 97,560,976 86,035,986 124 (1,524,990) 96,774,194 95,249,204 125 (1,524,990) 96,000,000 94,475,010 126 (1,524,990) 95,238,095 93,713,105 127 (847,829) 94,488,189 93,640,360 128 (109,640) 93,750,000 93,640,360 129 617,104 93,023,256 93,640,360 130 1,332,668 92,307,692 93,640,360 131 2,037,307 91,603,053 93,640,360 132 2,731,269 90,909,091 93,640,360 133 3,414,796 90,225,664 93,640,360 134 4,088,122 89,552,239 93,640,360 135 4,751,431 88,888,889 93,640,360 136 5,405,066 88,235,294 93,640,360 137 6,049,118 87,591,241 93,640,360 138 6,683,839 86,966,522 93,640,360 139 7,308,425 86,330,936 93,640,360 140 7,926,075 85,714,286 93,640,360 141 8,533,977 85,106,383 93,640,360 142 9,133,318 84,507,042 93,640,360 143 9,724,276 83,916,084 93,640,360 144 10,307,027 83,333,333 93,640,360 145 10,881,740 82,758,621 93,640,360 146 11,448,579 82,191,781 93,640,360 147 12,007,707 81,632,653 93,640,360 148 12,569,279 81,081,081 93,640,360 149 13,103,448 80,536,913 93,640,360 150 13,640,360 80,000,000 93,640,360。
国际财务管理(英文版)课后习题答案2
CHAPTER 1GLOBALIZATION AND THE MULTINATIONAL FIRMSUGGESTED ANSWERS TO END—OF-CHAPTER QUESTIONS QUESTIONS1 。
Why is it important to study international financial management？Answer: We are now living in a world where all the major economic functions, i.e.，consumption，production, and investment，are highly globalized. It is thus essential for financial managers to fully understand vital international dimensions of financial management. This global shift is in marked contrast to a situation that existed when the authors of this book were learning finance some twenty years ago. At that time, most professors customarily (and safely, to some extent) ignored international aspects of finance 。
This mode of operation has become untenable since then.2. How is international financial management different from domestic financial management？Answer ：There are three major dimensions that set apart international finance from domestic finance 。
计算机组成与体系结构英文版课后练习题含答案
Chapter 1 - Introduction
Exercise 1.1
What are the three mn functions of a computer?
What is the purpose of the control unit?
Answer:The purpose of the control unit is to control the flow of data and instructions within the CPU.
Exercise 4.2
Chapter 5 - Memory Organization
Exercise 5.1
What is the difference between RAM and ROM?
Answer:RAM (Random Access Memory) is volatile memory that can be read from and written to. ROM (Read-Only Memory) is non-volatile memory that can only be read.
What is the difference between a RISC and a CISC processor?
Answer:A RISC (Reduced Instruction Set Computer) processor has a simplified instruction set with fewer instructions that are executed more quickly. A CISC (Complex Instruction Set Computer) processor has a more complex instruction set with more instructions that can perform complex operations in a single instruction.
微积分英文版第九版课后练习题含答案
微积分英文版第九版课后练习题含答案微积分是数学中重要的一部分，其关注的是一条曲线或曲面的局部性质。
美国著名数学家Stewart所著的微积分英文版第九版是微积分学习的重要教材之一，本文将介绍其课后练习题，并提供答案供大家进行自我学习和测试。
课后练习题微积分英文版第九版的课后练习题共分为两部分，其中Part 1是选择题，Part 2是填空题和证明题，共计约1700道题目。
Part 1中包含了大量的选择题，这些题目主要考察读者对微积分理论的掌握和应用。
大多数题目都要求读者用所学知识推理或计算来获得正确答案。
这些题目中难易程度参差不齐，有一些比较简单，但也有一些比较困难。
Part 2的题目类型较多，包括了填空题、证明题、计算题等。
这些题目内容繁杂、难度较大，需要读者花费很多时间和精力来解答。
这些题目主要是为了检测读者对所学知识的深层次理解和应用能力，考察读者的逻辑思维和推理能力。
答案微积分英文版第九版提供了相应的课后练习答案，可以帮助读者检验自己的答案是否正确，同时也可以帮助读者更好地理解和掌握所学知识。
答案分为Part 1和Part 2两部分，且每部分分别包含了选择题和非选择题的答案。
这些答案详细、准确，提供了完整的解题思路和方法，帮助读者更好地理解题目的解法，并弥补了部分教材中的不足之处。
读者可以通过该教材的官方网站或者其他渠道获得课后练习题的答案。
结论微积分是数学中非常重要的一门学科，对于各个领域的科学研究、技术发展和社会进步都有着举足轻重的作用。
而微积分英文版第九版课后练习题则是培养和检验读者对微积分学习的深刻理解和应用能力的重要途径。
通过对这些题目的研究和答案的掌握，可以帮助读者更好地掌握微积分学科，提升自己的学术能力和科研能力。
管理会计(英文版)课后习题答案(高等教育出版社)chapter 4
管理会计（高等教育出版社）于增彪（清华大学）改编余绪缨（厦门大学）审校CHAPTER 4ACTIVITY-BASED COSTINGQUESTIONS FOR WRITING AND DISCUSSION1.Unit costs provide essential informationneeded for inventory valuation and prepara-tion of income statements. Knowing unit costs is also critical for many decisions such as bidding decisions and accept-or-reject special order decisions.2.Cost measurement is determining the dollaramounts associated with resources used in production. Cost assignment is associating the dollar amounts, once measured, with units produced.3.An actual overhead rate is rarely used be-cause of problems with accuracy and timeli-ness. Waiting until the end of the year to en-sure accuracy is rejected because of the need to have timely information. Timeliness of information based on actual overhead costs runs into difficulty (accuracy problems) because overhead is incurred nonuniformly and because production also may be non-uniform.4.For plantwide rates, overhead is first col-lected in a plantwide pool, using direct trac-ing. Next, an overhead rate is computed and used to assign overhead to products. 5.First stage: Overhead is assigned to produc-tion department pools using direct tracing, driver tracing, and allocation. Second stage: Individual departmental rates are used to assign overhead to products as they pass through the departments.6.Departmental rates would be chosen overplantwide rates whenever some depart-ments are more overhead intensive than others and if certain products spend more time in some departments than they do in others.7.Plantwide overhead rates assign overheadto products in proportion to the amount of the unit-level cost driver used. If the prod-ucts consume some overhead activities in different proportions than those assigned by the unit-level cost driver, then cost dis-tortions can occur (the product diversity factor). These distortions can be significant if the nonunit-level overhead costs represent a significant proportion of total overhead costs.8.Low-volume products may consume non-unit-level overhead activities in much greater proportions than indicated by a unit-levelcost driver and vice versa for high-volumeproducts. If so, then the low-volume prod-ucts will receive too little overhead and thehigh-volume products too much.9.If some products are undercosted and oth-ers are overcosted, a firm can make a num-ber of competitively bad decisions. For ex-ample, the firm might select the wrongproduct mix or submit distorted bids.10.Nonunit-level overhead activities are thoseoverhead activities that are not highly corre-lated with production volume measures. Ex-amples include setups, material handling,and inspection. Nonunit-level cost driversare causal factors—factors that explain theconsumption of nonunit-level overhead. Ex-amples include setup hours, number ofmoves, and hours of inspection.11.Product diversity is present whenever prod-ucts have different consumption ratios fordifferent overhead activities.12.An overhead consumption ratio measuresthe proportion of an overhead activity con-sumed by a product.13.Departmental rates typically use unit-levelcost drivers. If products consume nonunit-level overhead activities in different propor-tions than those of unit-level measures, thenit is possible for departmental rates to moveeven further away from the true consumptionratios, since the departmental unit-level ra-tios usually differ from the one used at theplant level.14.Agree. Prime costs can be assigned usingdirect tracing and so do not cause cost dis-tortions. Overhead costs, however, are notdirectly attributable and can cause distor-tions. For example, using unit-level activitydrivers to trace nonunit-level overhead costswould cause distortions.15.Activity-based product costing is an over-head costing approach that first assignscosts to activities and then to products. Theassignment is made possible through theidentification of activities, their costs, and theuse of cost drivers.16.An activity dictionary is a list of activitiesaccompanied by information that describeseach activity (called attributes)17. A primary activity is consumed by the finalcost objects such as products and custom-ers, whereas secondary activities are con-sumed by other activities (ultimately con-sumed by primary activities).18.Costs are assigned using direct tracing andresource drivers.19.Homogeneous sets of activities are pro-duced by associating activities that have thesame level and that can use the same driverto assign costs to products. Homogeneoussets of activities reduce the number of over-head rates to a reasonable level.20. A homogeneous cost pool is a collection ofoverhead costs that are logically related tothe tasks being performed and for whichcost variations can be explained by a singleactivity driver. Thus, a homogeneous pool ismade up of activities with the same process,the same activity level, and the same driver.21.Unit-level activities are those that occur eachtime a product is produced. Batch-level activi-ties are those that are performed each time abatch of products is produced. Product-levelor sustaining activities are those that areperformed as needed to support the variousproducts produced by a company. Facility-level activities are those that sustain a facto-ry’s general man ufacturing process.22.ABC improves costing accuracy wheneverthere is diversity of cost objects. There arevarious kinds of cost objects, with productsbeing only one type. Thus, ABC can be use-ful for improving cost assignments to costobjects like customers and suppliers. Cus-tomer and supplier diversity can occur for asingle product firm or for a JIT manufactur-ing firm.23.Activity-based customer costing can identifywhat it is costing to service different custom-ers. Once known, a firm can then devise astrategy to increase its profitability by focus-ing more on profitable customers, convertingunprofitable customers to profitable oneswhere possible, and “firing” customers thatcannot be made profitable.24.Activity-based supplier costing traces allsupplier-caused activity costs to suppliers.This new total cost may prove to be lowerthan what is signaled simply by purchaseprice.EXERCISES4–11.Quarter 1 Quarter 2 Q uarter 3 Quarter 4 Total Units produced 400,000 160,000 80,000 560,000 1,200,000 Prime costs $8,000,000 $3,200,000 $1,600,000 $11,200,000 $24,000,000 Overhead costs $3,200,000 $2,400,000 $3,600,000 $2,800,000 $12,000,000 Unit cost:Prime $20 $20 $20 $20 $20Overhead 8 15 45 5 10Total $28 $35 $65 $25 $30 2. Actual costing can produce wide swings in the overhead cost per unit. Thecause appears to be nonuniform incurrence of overhead and nonuniform production (seasonal production is a possibility).3. First, calculate a predetermined rate:OH rate = $11,640,000/1,200,000= $9.70 per unitThis rate is used to assign overhead to the product throughout the year.Since the driver is units produced, $9.70 would be assigned to each unit.Adding this to the actual prime costs produces a unit cost under normal cost-ing:Unit cost = $9.70 + $20.00 = $29.70This cost is close to the actual annual cost of $30.00.1. $13,500,000/3,600,000 = $3.75 per direct labor hour (DLH)2. $3.75 ⨯ 3,456,000 = $12,960,0003. Applied overhead $ 12,960,000A ctual overhead 13,600,000U nderapplied overhead $ 640,0004. Predetermined rates allow the calculation of unit costs and avoid the prob-lems of nonuniform overhead incurrence and nonuniform production asso-ciated with actual overhead rates. Unit cost information is needed throughout the year for a variety of managerial purposes.4–31. Predetermined overhead rate = $4,500,000/600,000 = $7.50 per DLH2. Applied overhead = $7.50 ⨯ 585,000 = $4,387,5003. Applied overhead $ 4,387,500Actual overhead 4,466,250Underapplied overhead $ (78,750)4. Unit cost:Prime costs $ 6,750,000Overhead costs 4,387,500Total $ 11,137,500Units ÷750,000Unit cost $ 14.851. Predetermined overhead rate = $4,500,000/187,500 = $24 per machine hour(MHr)2. Applied overhead = $24 187,875 = $4,509,0003. Applied overhead $ 4,509,000Actual overhead 4,466,250Overapplied overhead $ 42,7504. Unit cost:Prime costs $ 6,750,000Overhead costs 4,509,000Total $ 11,259,000Units ÷750,000Unit cost $ 15.01**Rounded5. Gandars needs to determine what causes its overhead. Is it primarily labordriven (e.g., composed predominantly of fringe benefits, indirect labor, and personnel costs), or is it machine oriented (e.g., composed of depreciation on machinery, utilities, and maintenance)? It is impossible for a decision to be made on the basis of the information given in this exercise.1. Predetermined rates:Drilling Department: Rate = $600,000/280,000 = $2.14* per MHrAssembly Department: Rate = $392,000/200,000= $1.96 per DLH*Rounded2. Applied overhead:Drilling Department: $2.14 ⨯ 288,000 = $616,320Assembly Department: $1.96 ⨯ 196,000 = $384,160Overhead variances:Drilling Assembly Total Actual overhead $602,000 $ 412,000 $ 1,014,000 Applied overhead 616,320 384,160 1,000,480 Overhead variance $ (14,320) over $ 27,840 under $ 13,520 3. Unit overhead cost = [($2.14 ⨯ 4,000) + ($1.96 ⨯ 1,600)]/8,000= $11,696/8,000= $1.46**Rounded1. Activity rates:Machining = $632,000/300,000= $2.11* per MHrInspection = $360,000/12,000= $30 per inspection hour*Rounded2. Unit overhead cost = [($2.11 ⨯ 8,000) + ($30 ⨯ 800)]/8,000= $40,880/8,000= $5.114–71. Yes. Since direct materials and direct labor are directly traceable to eachproduct, their cost assignment should be accurate.2. Elegant: (1.75 ⨯ $9,000)/3,000 = $5.25 per briefcaseFina: (1.75 ⨯ $3,000)/3,000 = $1.75 per briefcaseNote: Overhead rate = $21,000/$12,000 = $1.75 per direct labor dollar (or 175 percent of direct labor cost).There are more machine and setup costs assigned to Elegant than Fina. This is clearly a distortion because the production of Fina is automated and uses the machine resources much more than the handcrafted Elegant. In fact, the consumption ratio for machining is 0.10 and 0.90 (using machine hours as the measure of usage). Thus, Fina uses nine times the machining resources as Elegant. Setup costs are similarly distorted. The products use an equal number of setups hours. Yet, if direct labor dollars are used, then the Elegant briefcase receives three times more machining costs than the Fina briefcase.4–7 Concluded3. Overhead rate = $21,000/5,000= $4.20 per MHrElegant: ($4.20 ⨯ 500)/3,000 = $0.70 per briefcaseFina: ($4.20 ⨯ 4,500)/3,000 = $6.30 per briefcaseThis cost assignment appears more reasonable given the relative demands each product places on machine resources. However, once a firm moves to a multiproduct setting, using only one activity driver to assign costs will likely produce product cost distortions. Products tend to make different demands on overhead activities, and this should be reflected in overhead cost assign-ments. Usually, this means the use of both unit- and nonunit-level activity drivers. In this example, there is a unit-level activity (machining) and a non-unit-level activity (setting up equipment). The consumption ratios for each (using machine hours and setup hours as the activity drivers) are as follows:Elegant FinaMachining 0.10 0.90 (500/5,000 and 4,500/5,000)Setups 0.50 0.50 (100/200 and 100/200)Setup costs are not assigned accurately. Two activity rates are needed—one based on machine hours and the other on setup hours:Machine rate: $18,000/5,000 = $3.60 per MHrSetup rate: $3,000/200 = $15 per setup hourCosts assigned to each product:Machining: Elegant Fina$3.60 ⨯ 500 $ 1,800$3.60 ⨯ 4,500 $ 16,200Setups:$15 ⨯ 100 1,500 1,500Total $ 3,300 $ 17,700Units ÷3,000 ÷3,000Unit overhead cost $ 1.10 $ 5.90Activity dictionary:Activity Activity Primary/ ActivityName Description Secondary Driver Providing nursing Satisfying patient Primary Nursing hours care needsSupervising Coordinating Secondary Number of nurses nurses nursing activitiesFeeding patients Providing meals Primary Number of mealsto patientsLaundering Cleaning and Primary Pounds of laundry bedding and delivering clothesclothes and beddingProviding Therapy treatments Primary Hours of therapy physical directed bytherapy physicianMonitoring Using equipment to Primary Monitoring hours patients monitor patientconditions1. dCost of labor (0.75 ⨯ $40,000) $30,000Forklift (direct tracing) 6,000 Total cost of receiving $36,000 2. b3. a4. c5. dActivity rates (Questions 2–5):Receiving: $36,000/50,000 = $0.72 per partSetup: $60,000/300 = $200 per setupGrinding: $90,000/18,000 = $5 per MHrInspecting: $45,000/4,500 = $10 per inspection hour6. aOverhead rate = $231,000/20,000 = $11.55 per DLH Direct materials $ 850Direct labor 600Overhead ($11.55 ⨯ 50) 578*Total cost $ 2,028Units ÷100Unit cost $ 20.28*Rounded4–9 Concluded7. bDirect materials $ 850.00Direct labor 600.00Overhead:Setup 200.00 ($200 ⨯ 1)Inspecting 40.00 ($10 ⨯ 4)Grinding 100.00 ($5 ⨯ 20)Receiving 14.40 ($0.72 ⨯ 20) Total costs $ 1,804.40Units ÷100Unit cost $ 18.04**Rounded4–101. Unit-level: Testing products, inserting dies2. Batch-level: Setting up batches, handling wafer lots, purchasingmaterials, receiving materials3. Product-level: Developing test programs, making probe cards,engineering design, paying suppliers4. Facility-level: Providing utilities, providing space4–111. Unit-level activities: MachiningBatch-level activities: Setups and packing Product-level activities: ReceivingFacility-level activities: None2. Pools and drivers:Unit-levelPool 1:Machining $80,000Activity driver: Machine hoursBatch-levelPool 2:Setups $24,000Packing 30,000Total cost $54,000Product-levelPool 3:Receiving $18,000Activity driver: Receiving orders4–11 Concluded3. Pool rates:Pool 1: $80,000/40,000 = $2 per MHrPool 2: $54,000/300 = $180 per setupPool 3: $18,000/600 = $30 per receiving order 4. Overhead assignment:InfantryPool 1: $2 ⨯ 20,000 = $ 40,000Pool 2: $180 ⨯ 200 = 36,000Pool 3: $30 ⨯ 200 = 6,000Total $ 82,000Special forcesPool 1: $2 ⨯ 20,000 = $ 40,000Pool 2: $180 ⨯ 100 = 18,000Pool 3: $30 ⨯ 400 = 12,000Total $ 70,0004–121. Deluxe Percent Regular PercentPrice $900 100% $750 100% Cost 576 64 600 80 Unit gross profit $324 36% $150 20% Total gross profit:($324 ⨯ 100,000) $32,400,000($150 ⨯ 800,000) $120,000,0002. Calculation of unit overhead costs:Deluxe Regular Unit-level:Machining:$200 ⨯ 100,000 $20,000,000$200 ⨯ 300,000 $60,000,000 Batch-level:Setups:$3,000 ⨯ 300 900,000$3,000 ⨯ 200 600,000 Packing:$20 ⨯ 100,000 2,000,000$20 ⨯ 400,000 8,000,000 Product-level:Engineering:$40 ⨯ 50,000 2,000,000$40 ⨯ 100,000 4,000,000 Facility-level:Providing space:$1 ⨯ 200,000 200,000$1 ⨯ 800,000 800,000 Total overhead $ 25,100,000 $ 73,400,000 Units ÷100,000 ÷800,000 Overhead per unit $ 251 $ 91.75Deluxe Percent Regular Percent Price $900 100% $750.00 100%Cost 780* 87*** 574.50** 77***Unit gross profit $120 13%*** $175.50 23%***Total gross profit:($120 ⨯ 100,000) $12,000,000($175.50 ⨯ 800,000) $140,400,000*$529 + $251**$482.75 + $91.75***Rounded3. Using activity-based costing, a much different picture of the deluxe and regu-lar products emerges. The regular model appears to be more profitable. Per-haps it should be emphasized.4–131. JIT Non-JITSales a$12,500,000 $12,500,000Allocation b750,000 750,000a$125 ⨯ 100,000, where $125 = $100 + ($100 ⨯ 0.25), and 100,000 is the average order size times the number of ordersb0.50 ⨯ $1,500,0002. Activity rates:Ordering rate = $880,000/220 = $4,000 per sales orderSelling rate = $320,000/40 = $8,000 per sales callService rate = $300,000/150 = $2,000 per service callJIT Non-JITOrdering costs:$4,000 ⨯ 200 $ 800,000$4,000 ⨯ 20 $ 80,000Selling costs:$8,000 ⨯ 20 160,000$8,000 ⨯ 20 160,000Service costs:$2,000 ⨯ 100 200,000$2,000 ⨯ 50 100,000T otal $ 1,160,000 $ 340,000For the non-JIT customers, the customer costs amount to $750,000/20 = $37,500 per order under the original allocation. Using activity assignments, this drops to $340,000/20 = $17,000 per order, a difference of $20,500 per or-der. For an order of 5,000 units, the order price can be decreased by $4.10 per unit without affecting customer profitability. Overall profitability will decrease, however, unless the price for orders is increased to JIT customers.3. It sounds like the JIT buyers are switching their inventory carrying costs toEmery without any significant benefit to Emery. Emery needs to increase prices to reflect the additional demands on customer-support activities. Fur-thermore, additional price increases may be needed to reflect the increased number of setups, purchases, and so on, that are likely occurring inside the plant. Emery should also immediately initiate discussions with its JIT cus-tomers to begin negotiations for achieving some of the benefits that a JIT supplier should have, such as long-term contracts. The benefits of long-term contracting may offset most or all of the increased costs from the additional demands made on other activities.4–141. Supplier cost:First, calculate the activity rates for assigning costs to suppliers: Inspecting components: $240,000/2,000 = $120 per sampling hourReworking products: $760,500/1,500 = $507 per rework hourWarranty work: $4,800/8,000 = $600 per warranty hourNext, calculate the cost per component by supplier:Supplier cost:Vance Foy Purchase cost:$23.50 ⨯ 400,000 $ 9,400,000$21.50 ⨯ 1,600,000 $ 34,400,000 Inspecting components:$120 ⨯ 40 4,800$120 ⨯ 1,960 235,200 Reworking products:$507 ⨯ 90 45,630$507 ⨯ 1,410 714,870 Warranty work:$600 ⨯ 400 240,000$600 ⨯ 7,600 4,560,000 Total supplier cost $ 9,690,430 $ 39,910,070Units supplied ÷400,000 ÷1,600,000Unit cost $ 24.23* $ 24.94**RoundedThe difference is in favor of Vance; however, when the price concession is con sidered, the cost of Vance is $23.23, which is less than Foy’s component.Lumus should accept the contractual offer made by Vance.4–14 Concluded2. Warranty hours would act as the best driver of the three choices. Using thisdriver, the rate is $1,000,000/8,000 = $125 per warranty hour. The cost as-signed to each component would be:Vance Foy Lost sales:$125 ⨯ 400 $ 50,000$125 ⨯ 7,600 $ 950,000$ 50,000 $ 950,000 U nits supplied ÷ 400,000 ÷1,600,000I ncrease in unit cost $ 0.13* $ 0.59**RoundedPROBLEMS4–151. Product cost assignment:Overhead rates:Patterns: $30,000/15,000 = $2.00 per DLHFinishing: $90,000/30,000 = $3.00 per DLHUnit cost computation:Duffel BagsPatterns:$2.00 ⨯ 0.1 $0.20$2.00 ⨯ 0.2 $0.40Finishing:$3.00 ⨯ 0.2 0.60$3.00 ⨯ 0.4 1.20Total per unit $0.80 $1.602. Cost before addition of duffel bags:$60,000/100,000 = $0.60 per unitThe assignment is accurate because all costs belong to the one product.4–15 Concluded3. Activity-based cost assignment:Stage 1:Pool rate = $120,000/80,000 = $1.50 per transactionStage 2:Overhead applied:Backpacks: $1.50 ⨯ 40,000* = $60,000Duffel bags: $1.50 ⨯ 40,000 = $60,000*80,000 transactions/2 = 40,000 (number of transactions had doubled)Unit cost:Backpacks: $60,000/100,000 = $0.60 per unitDuffel bags: $60,000/25,000 = $2.40 per unit4. This problem allows the student to see what the accounting cost per unitshould be by providing the ability to calculate the cost with and without the duffel bags. With this perspective, it becomes easy to see the benefits of the activity-based approach over those of the functional-based approach. The activity-based approach provides the same cost per unit as the single-product setting. The functional-based approach used transactions to allocate accounting costs to each producing department, and this allocation probably reflects quite well the consumption of accounting costs by each producing department. The problem is the second-stage allocation. Direct labor hours do not capture the consumption pattern of the individual products as they pass through the departments. The distortion occurs, not in using transac-tions to assign accounting costs to departments, but in using direct labor hours to assign these costs to the two products.In a single-product environment, ABC offers no improvement in product cost-ing accuracy. However, even in a single-product environment, it may be poss-ible to increase the accuracy of cost assignments to other cost objects such as customers.4–161. Plantwide rate = $660,000/440,000 = $1.50 per DLHOverhead cost per unit:Model A: $1.50 ⨯ 140,000/30,000 = $7.00Model B: $1.50 ⨯ 300,000/300,000 = $1.502. Departmental rates:Department 1: $420,000/180,000 = $2.33 per MHr*Department 2: $240,000/400,000 = $0.60 per DLHDepartment 1: $420,000/40,000 = $10.50 DLHDepartment 2: $240,000/40,000 = $6.00 per MHrOverhead cost per unit:Model A: [($2.33 ⨯ 10,000) + ($0.60 ⨯ 130,000)]/30,000 = $3.38Model B: [($2.33 ⨯ 170,000) + ($0.60 ⨯ 270,000)]/300,000 = $1.86Overhead cost per unit:Model A: [($10.50 ⨯ 10,000) + ($6.00 ⨯ 10,000)]/30,000 = $5.50Model B: [($10.50 ⨯ 30,000) + ($6.00 ⨯ 30,000)]/300,000 = $1.65*Rounded numbers throughoutA common justification is that of using machine hours for machine-intensivedepartments and labor hours for labor-intensive departments. Using this rea-soning, the first set of departmental rates would be selected (machine hours for Department 1 and direct labor hours for Department 2).3. Calculation of pool rates:Driver Pool RateBatch-level pool:Setup and inspection Product runs $320,000/100 = $3,200 per runUnit-level pool:Machine andmaintenance Machine hours $340,000/220,000 = $1.545 per MHr Note: Inspection hours could have been used as an activity driver instead of production runs.Overhead assignment:Model BBatch-level:Setups and inspection$3,200 ⨯ 40 $ 128,000$3,200 ⨯ 60 $ 192,000Unit-level:Power and maintenance$1.545 ⨯ 20,000 30,900$1.545 ⨯ 200,000 309,000Total overhead $ 158,900 $ 501,000Units produced ÷30,000 ÷ 300,000Overhead per unit $ 5.30 $ 1.674. Using activity-based costs as the standard, we can say that the first set ofdepartmental rates decreased the accuracy of the overhead cost assignment (over the plantwide rate) for both products. The opposite is true for the second set of departmental rates. In fact, the second set is very close to the activity assignments. Apparently, departmental rates can either improve or worsen plantwide assignments. In the first case, D epartment 1’s costs are assigned at a 17:1 ratio which overcosts B and undercosts A in a big way.Yet, this is the most likely set of rates at the departmental level! This raises some doubt about the conventional wisdom regarding departmental rates.4–171. Labor and gasoline are driver tracing.Labor (0.75 ⨯ $120,000) $ 90,000 Time = Resource driverGasoline ($3 ⨯ 6,000 moves) 18,000 Moves = Resource driverDepreciation (2 ⨯ $6,000) 12,000 Direct tracingTotal cost $ 120,0002. Plantwide rate = $600,000/20,000= $30 per DLHUnit cost:DeluxePrime costs $80.00 $160Overhead:$30 ⨯ 10,000/40,000 7.50$30 ⨯ 10,000/20,000 15$87.50 $1753. Pool 1: Maintenance $ 114,000Engineering 120,000Total $ 234,000Maintenance hours ÷4,000Pool rate $ 58.50Note:Engineering hours could also be used as a driver. The activities are grouped together because they have the same process, are both product lev-el, and have the same consumption ratios (0.25, 0.75).Pool 2: Material handling $ 120,000Number of moves ÷6,000Pool rate $ 20Pool 3: Setting up $ 96,000Number of setups ÷80Pool rate $ 1,200Note: Material handling and setups are both batch-level activities but have dif-ferent consumption ratios.Pool 4: Purchasing $ 60,000Receiving 40,000Paying suppliersTotal $ 130,000Orders processed ÷750Pool rate $ 173.33Note:The three activities are all product-level activities and have the same consumption ratios.Pool 5: Providing space $ 20,000Machine hours ÷10,000Pool rate $ 2Note: This is the only facility-level activity.4. Unit cost:Basic Deluxe Prime costs $ 3,200,000 $ 3,200,000Overhead:Pool 1:$58.50 ⨯ 1,000 58,500$58.50 ⨯ 3,000 175,500 Pool 2:$20 ⨯ 2,000 40,000$20 ⨯ 4,000 80,000 Pool 3:$1,200 ⨯ 20 24,000$1,200 ⨯ 60 72,000 Pool 4:$173.33 ⨯ 250 43,333$173.33 ⨯ 500 86,665 Pool 5:$2 ⨯ 5,000 10,000$2 ⨯ 5,000 10,000 Total $ 3,375,833 $ 3,624,165Units produced ÷40,000 ÷20,000Unit cost (ABC) $ 84.40 $ 181.21Unit cost (traditional) $ 87.50 $ 175.00The ABC costs are more accurate (better tracing—closer representation of actual resource consumption). This shows that the basic model was over-costed and the deluxe model undercosted when the plantwide overhead rate was used.1. Unit-level costs ($120 ⨯ 20,000) $ 2,400,000Batch-level costs ($80,000 ⨯ 20) 1,600,000Product-level costs ($80,000 ⨯ 10) 800,000Facility-level ($20 ⨯ 20,000) 400,000Total cost $ 5,200,0002. Unit-level costs ($120 ⨯ 30,000) $ 3,600,000Batch-level costs ($80,000 ⨯ 20) 1,600,000Product-level costs ($80,000 ⨯ 10) 800,000Facility-level costs 400,000Total cost $ 6,400,000The unit-based costs increase because these costs vary with the number of units produced. Because the batches and engineering orders did not change, the batch-level costs and product-level costs remain the same, behaving as fixed costs with respect to the unit-based driver. The facility-level costs are fixed costs and do not vary with any driver.3. Unit-level costs ($120 ⨯ 30,000) $ 3,600,000Batch-level costs ($80,000 ⨯ 30) 2,400,000Product-level costs ($80,000 ⨯ 12) 960,000Facility-level costs 400,000Total cost $ 7,360,000Batch-level costs increase as the number of batches changes, and the costs of engineering support change as the number of orders change. Thus, batches and orders increased, increasing the total cost of the model.4. Classifying costs by category allows their behavior to be better understood.This, in turn, creates the ability to better manage costs and make decisions.1. The total cost of care is $1,950,000 plus a $50,000 share of the cost of super-vision [(25/150) ⨯ $300,000]. The cost of supervision is computed as follows: Salary of supervisor (direct) $ 70,000Salary of secretary (direct) 22,000Capital costs (direct) 100,000Assistants (3 ⨯ 0.75 ⨯ $48,000) 108,000Total $ 300,000Thus, the cost per patient day is computed as follows:$2,000,000/10,000 = $200 per patient day(The total cost of care divided by patient days.) Notice that every maternity patient—regardless of type—would pay the daily rate of $200.2. First, the cost of the secondary activity (supervision) must be assigned to theprimary activities (various nursing care activities) that consume it (the driver is the number of nurses):Maternity nursing care assignment:(25/150) ⨯ $300,000 = $50,000Thus, the total cost of nursing care is $950,000 + $50,000 = $1,000,000.Next, calculate the activity rates for the two primary activities:Occupancy and feeding: $1,000,000/10,000 = $100 per patient dayNursing care: $1,000,000/50,000 = $20 per nursing hour。
中国文化简介(英文版)课后习题答案2
中国文化简介（英文版）课后习题答案2Chapter6—chapter8Chapter 61.1) d 2) d 3) d 4) d2.5) Feng, Ya, Song, Fu, Bi, Xing6) The Classic of Poetry; The Classic of History; The Classic of Rites; The Classic of Rites; The Classic of Changes; The Spring and Autumn Annals.7) Feng (Ballads); Ya (Odes); Song (Sacrificial Songs)3.8) a. The Great Learningb. The Analects of Confucius9) a. The Doctrine of the Meanb . The Classic of History10) a. The Classic of Changesb. The Four Books and Five Classics4.11) “Confucius Way of the Heart”means if everyone makes strict demands onhimself/herself, and does everything according to the Confucian rites, then the relations between the king and the minister, the father and the son will eventually be harmonized, and the society will go smoothly.12) “To know something is not so good as to like it; to like it is not so good as todelight in it.” It means a person who prefers it can learn better than one who merely understands it; but a person who delights in it learns even better than one who only prefers it.5. 略Chapter 71 Multiple choice (choose the best answer).1) a 2) b 3) a 4) a2 Fill in the blanks.5)controlling flood, Yv the Great, Shun6)Pan Gu, Nv Wa, her own model, yellow clay3 Translate the following terms into English7)a. the descendants of Yan and Huang b. Yv the Great controlling the flood8)a. the Eight Immortals crossing the sea. b. Nv Wa creating man9)a. Pan Gu creating the world b.Kua Fu chasing the Sun4 Answer the following questions.10)Huang Di is resourceful in invention as well as in war and is credited with the invention of many things, like carts and boats, clothes, houses, writing and silkworm breeding and Silk weaving. Yan Di is credited with the invention of farming and medicine. He invented the wooden plow and taught people how to treat diseases. Wars urged the mixture and the assimilation of different tribes and eventually formed a tribal alliance of Huang Di and Yan Di. Traditions has it that Chinese civilization originated from the era of Huang Di and Yan Di, for they are the ancestors of the Chinese people. That is why the Chinese call themselves the descendants of Yan and Huang.11)略5 Retell the stories with the help of the following pictures.略Chapter 81.1) a 2)d 3)d 4) a2.5) the guti verse forms, jinti verse forms, classical, verse form, moder6) Shijing7) Li Sao8) Sage Poet, the greatest realist poet9) Su Shi, Li Qingzhao3.10) a. Tang Poems b. Songci11) a. yuanqu b. Chuci4.12) Yuefu originally referred to the “music bureau” in the Han Dynasty, responsible for collecting or writing poems, folk songs and ballads, and having them set to music. Later, poems, folk songs and ballads collected and compiled by yufu were given the name Yuefu.13) Ci is a kind of poetry written to certain tunes with strict tonal patterns and rhyme schemes, in fixed numbers of lines and words, originated in Tang Dynasty and fully developed in Song Dynasty.14) Apart from the above verse forms, there is also Fu, it’s something between poetry and prose, similar to rhapsody: a descriptive poem, and much cultivated from Han times to the Six Dynasties. Examples are Su Shi's “Fu on the Red Cliff”, Ban Gu’s Rhapsody on Two Capitals”, etc.5. 略。
计算机网络(第四版)课后习题(英文)+习题答案(中英文)
ANDREW S. TANENBAUM 秒，约533 msec.----- COMPUTER NETWORKS FOURTH EDITION PROBLEM SOLUTIONS 8. A collection of five routers is to be conn ected in a poi nt-to-poi nt sub net.Collected and Modified By Yan Zhe nXing, Mail To: Betwee n each pair of routers, the desig ners may put a high-speed line, aClassify: E aEasy, M ^Middle, H Hard , DaDeleteGree n: Importa nt Red: Master Blue: VI Others:Know Grey:—Unnecessary ----------------------------------------------------------------------------------------------ML V Chapter 1 In troductio nProblems2. An alter native to a LAN is simply a big timeshari ng system with termi nals forall users. Give two adva ntages of a clie nt-server system using a LAN.(M)使用局域网模型可以容易地增加节点。
如果局域网只是一条长的电缆，且不会因个别的失效而崩溃(例如采用镜像服务-------------------------------------------器)的情况下，使用局域网模型会更便宜。
有机化学英文版课后练习题含答案
有机化学英文版课后练习题含答案Organic chemistry is the study of carbon-based compounds, which are found in everything from your food and medicine to the plastics in your car. It is an important subject in the field of chemistry and is usually taught at the university level. In this article, we will introduce some organic chemistry practice questions with answers, which can be used by students to practice and improve their knowledge of the subject.Question 1Draw the structure of 2-methyl-1-butene.Answer:2-methyl-1-butene structure2-methyl-1-butene structureQuestion 2Write the condensed formula for 2,4-dimethylheptane.Answer:The condensed formula is C9H20.Question 3Write the IUPAC name for CH3CH2CH2C(CH3)2CH3.Answer:The IUPAC name is 3,3-dimethylpentane.Question 4What is the functional group of butanoic acid?Answer:The functional group is a carboxyl group (-COOH).Question 5Which compound is more acidic: ethanol or acetic acid?Answer:Acetic acid is more acidic than ethanol because the presence of the carboxyl group in acetic acid makes it more acidic than ethanol.Question 6What is the mechanism of the reaction between ethene and hydrogen to form ethane?Answer:The mechanism is a catalytic hydrogenation reaction, which involves the addition of hydrogen to the carbon-carbon double bond in ethene to form ethane.Question 7What is the effect of increasing the size of the alkyl group on the boiling point of alkanes?Answer:Increasing the size of the alkyl group increases the boiling point of alkanes because larger molecules have stronger van der Waals forces of attraction, which require more energy to break.Question 8What is the difference between an electrophile and a nucleophile?Answer:An electrophile is an atom or molecule that is attractedto electrons and accepts a pr of electrons from another molecule during a chemical reaction. A nucleophile is an atom or molecule that has a lone pr of electrons and donates a pr of electrons to another molecule during a chemical reaction.Question 9What is the difference between an alkane and an alkene?Answer:An alkane is a hydrocarbon that contns only single bonds between carbon atoms. An alkene is a hydrocarbon that contns at least one carbon-carbon double bond.Question 10What is the difference between a saturated and an unsaturated hydrocarbon?Answer:A saturated hydrocarbon contns only single bonds between carbon atoms and is therefore。
《管理会计》英文版课后习题答案
第二章产品成本计算Exercises2–1（指教材上的第2章练习第1题，下同）1. Part #72A Part #172CSteel* $ 12.00 $ 18.00Setup cost** 6.00 6.00Total $ 18.00 $ 24.00*($1.00 ? 12; $1.00 ? 18)**($60,000/10,000)Steel cost is assigned by calculating a cost per ounce and then multiplying this by the ounces used by each part:Cost per ounce= $3,000,000/3,000,000 ounces= $1.00 per ounceSetup cost is assigned by calculating the cost per setup and then dividing this by the number of units in each batch (there are 20 setups per year):Cost per setup = $1,200,000/20= $60,0002. The cost of steel is assigned through the driver tracing using the number of ounces of steel, and the cost of the setups is assigned through driver tracing also using number of setups as the driver.3. The assumption underlying number of setups as the driver is that each part uses an equal amount of setup time. Since Part #72A uses double the setup time of Part #172C, it makes sense to assign setup costs based on setup time instead of number of setups. This illustrates the importance of identifying drivers that reflect the true underlying consumption pattern. Using setup hours [(40 ?10) + (20 ? 10)], we get the following rate per hour:Cost per setup hour = $1,200,000/600= $2,000 per hourThe cost per unit is obtained by dividing each part’s total setup costs by the number of units:Part #72A = ($2,000 ? 400)/100,000 = $8.00Part #172C = ($2,000 ? 200)/100,000 = $4.00Thus, Part #72A has its unit cost increased by $2.00, while Part #172C has its unit cost decreased by $2.00.problems2–51. Nursing hours required per year: 4 ? 24 hours ? 364 days* = 34,944*Note: 364 days = 7 days ? 52 weeksNumber of nurses = 34,944 hrs./2,000 hrs. per nurse = 17.472Annual nursing cost = (17 ? $45,000) + $22,500= $787,500Cost per patient day = $787,500/10,000 days= $78.75 per day (for either type of patient)2. Nursing hours act as the driver. If intensive care uses half of the hours and normal care the other half, then 50 percent of the cost is assigned to each patient category. Thus, the cost per patient day by patient category is as follows:Intensive care = $393,750*/2,000 days= $196.88 per dayNormal care = $393,750/8,000 days= $49.22 per day*$525,000/2 = $262,500The cost assignment reflects the actual usage of the nursing resource and, thus, should be more accurate. Patient days would be accurate only if intensive care patients used the same nursing hours per day as normal care patients.3. The salary of the nurse assigned only to intensive care is a directly traceable cost. To assign the other nursing costs, the hours of additional usage would need to be measured. Thus, both direct tracing and driver tracing would be used to assign nursing costs for this new setting.2–61. Bella Obra CompanyStatement of Cost of Services SoldFor the Year Ended June 30, 2006Direct materials:Beginning inventory $ 300,000Add: Purchases 600,000Materials available $ 900,000Less: Ending inventory 450,000*Direct materials used $ 450,000Direct labor 12,000,000Overhead 1,500,000Total service costs added $ 13,950,000Add: Beginning work in process 900,000Total production costs $ 14,850,000Less: Ending work in process 1,500,000Cost of services sold $ 13,350,000*Materials available less materials used2. The dominant cost is direct labor (presumably the salaries of the 100 professionals). Although labor is the major cost of providing many services, it is not always the case. For example, the dominant cost for some medical services may be overhead (e.g., CAT scans). In some services, the dominant cost may be materials (e.g., funeral services).3. Bella Obra CompanyIncome StatementFor the Year Ended June 30, 2006Sales $ 21,000,000Cost of services sold 13,350,000Gross margin $ 7,650,000Less operating expenses:Selling expenses $ 900,000Administrative expenses 750,000 1,650,000Income before income taxes $ 6,000,0004. Services have four attributes that are not possessed by tangible products: (1) intangibility, (2) perishability, (3) inseparability, and (4) heterogeneity. Intangibility means that the buyers of services cannot see, feel, hear, or taste a service before it is bought. Perishability means that services cannot be stored. This property affects the computation in Requirement 1. Inability to store services means that there will never be any finished goods inventories, thus making the cost of services produced equivalent to cost of services sold. Inseparability simply means that providers and buyers of services must be in direct contact for an exchange to take place. Heterogeneity refers to the greater chance for variation in the performance of services than in the production of tangible products.2–71. Direct materials:Magazine (5,000 ? $0.40) $ 2,000Brochure (10,000 ? $0.08) 800 $ 2,800Direct labor:Magazine [(5,000/20) ? $10] $ 2,500Brochure [(10,000/100) ? $10] 1,000 3,500Manufacturing overhead:Rent $ 1,400Depreciation [($40,000/20,000) ? 350*] 700Setups 600Insurance 140Power 350 3,190Cost of goods manufactured $ 9,490*Production is 20 units per printing hour for magazines and 100 units per printing hour for brochures, yielding monthly machine hours of 350 [(5,000/20) + (10,000/100)]. This is also monthly labor hours, as machine labor only operates the presses.2. Direct materials $ 2,800Direct labor 3,500Total prime costs $ 6,300Magazine:Direct materials $ 2,000Direct labor 2,500Total prime costs $ 4,500Brochure:Direct materials $ 800Direct labor 1,000Total prime costs $ 1,800Direct tracing was used to assign prime costs to the two products.3. Total monthly conversion cost:Direct labor $ 3,500Overhead 3,190Total $ 6,690Magazine:Direct labor $ 2,500Overhead:Power ($1 ? 250) $ 250Depreciation ($2 ? 250) 500Setups (2/3 ? $600) 400Rent and insurance ($4.40 ? 250 DLH)* 1,100 2,250Total $ 4,750Brochure:Direct labor $ 1,000Overhead:Power ($1 ? 100) $ 100Depreciation ($2 ? 100) 200Setups (1/3 ? $600) 200Rent and insurance ($4.40 ? 100 DLH)* 440 940Total $ 1,940*Rent and insurance cannot be traced to each product so the costs are assigned using direct labor hours: $1,540/350 DLH = $4.40 per direct labor hour. The other overhead costs are traced according to their usage. Depreciation and power are assigned by using machine hours (250 for magazines and 100 for brochures): $350/350 = $1.00 per machine hour for power and $40,000/20,000 = $2.00 per machine hour for depreciation. Setups are assigned according to the time required. Since magazines use twice as much time, they receive twice the cost: Letting X = the pro?portion of setup time used for brochures, 2X + X = 1 implies a cost assignment ratio of 2/3 for magazines and 1/3 for brochures.Exercises3–11. Resource Total Cost Unit CostPlastic1 $ 10,800 $0.027Direct labor andvariable overhead2 8,000 0.020Mold sets3 20,000 0.050Other facility costs4 10,000 0.025Total $ 48,800 $0.12210.90 ? $0.03 ? 400,000 = $10,800; $10,800/400,000 = $0.0272$0.02 ? 400,000 = $8,000; $8,000/400,000 = $0.023$5,000 ? 4 quarters = $20,000; $20,000/400,000 = $0.054$10,000; $10,000/400,000 = $0.0252. Plastic, direct labor, and variable overhead are flexible resources; molds and other facility costs are committed resources. The cost of plastic, direct labor, and variable overhead are strictly variable. The cost of the molds is fixed for the particular action figure being produced; it is a step cost for the production of action figures in general. Other facility costs are strictly fixed.3–3High (1,400, $7,950); Low (700, $5,150)V = ($7,950 – $5,150)/(1,400 – 700)= $2,800/700 = $4 per oil changeF = $5,150 – $4(700)= $5,150 – $2,800 = $2,350Cost = $2,350 + $4 (oil changes)Predicted cost for January = $2,350 + $4(1,000) = $6,350problems3–61. High (1,700, $21,000); Low (700, $15,000)V = (Y2 – Y1)/(X2 – X1)= ($21,000 – $15,000)/(1,700 – 700) = $6 per receiving orderF = Y2 – VX2= $21,000 – ($6)(1,700) = $10,800Y = $10,800 + $6X2. Output of spreadsheet regression routine with number of receiving orders as the independent variable:Constant 4512.98701298698Std. Err. of Y Est. 3456.24317476605R Squared 0.633710482694768No. of Observations 10Degrees of Freedom 8X Coefficient(s) 13.3766233766234Std. Err. of Coef. 3.59557461331427V = $13.38 per receiving order (rounded)F = $4,513 (rounded)Y = $4,513 + $13.38XR2 = 0.634, or 63.4%Receiving orders explain about 63.4 percent of the variability in receiving cost, providing evidence that Tracy’s choice o f a cost driver is reasonable. However, other drivers may need to be considered because 63.4 percent may not be strong enough to justify the use of only receiving orders.3. Regression with pounds of material as the independent variable:Constant 5632.28109733183Std. Err. of Y Est. 2390.10628259277R Squared 0.824833789433823No. of Observations 10Degrees of Freedom 8X Coefficient(s) 0.0449642991356633Std. Err. of Coef. 0.0073259640055344V = $0.045 per pound of material delivered (rounded)F = $5,632 (rounded)Y = $5,632 + $0.045XR2 = 0.825, or 82.5%Pounds of material delivered explains about 82.5 percent of the variability in receiving cost. This is a better result than that of the receiving orders and should convince Tracy to try multiple regression.4. Regression routine with pounds of material and number of receiving orders as the independent variables:Constant 752.104072925631Std. Err. of Y Est. 1350.46286973443R Squared 0.951068418023306No. of Observations 10Degrees of Freedom 7X Coefficient(s) 0.0333883151096915 7.14702865269395Std. Err. of Coef. 0.00495524841198368 1.68182916088492V1 = $0.033 per pound of material delivered (rounded)V2 = $7.147 per receiving order (rounded)F = $752 (rounded)Y = $752 + $0.033a + $7.147bR2 = 0.95, or 95%Multiple regression with both variables explains 95 percent of the variability in receiving cost. This is the best result.5–21. Job #57 Job #58 Job #59Balance, 7/1 $ 22,450 $ 0 $ 0Direct materials 12,900 9,900 35,350Direct labor 20,000 6,500 13,000Applied overhead:Power 750 600 3,600Material handling 1,500 300 6,000Purchasing 250 1,000 250Total cost $ 57,850 $ 18,300 $ 58,2002. Ending balance in Work in Process = Job #58 = $18,3003. Ending balance in Finished Goods = Job #59 = $58,2004. Cost of Goods Sold = Job #57 = $57,850problems5–31. Overhead rate = $180/$900 = 0.20 or 20% of direct labor dollars.(This rate was calculated using information from the Ladan job; however, the Myron and Coe jobs would give the same answer.)2. Ladan Myron Coe Walker WillisBeginning WIP $ 1,730 $1,180 $2,500 $ 0 $ 0Direct materials 400 150 260 800 760Direct labor 800 900 650 350 900Applied overhead 160 180 130 70 180Total $ 3,090 $2,410 $3,540 $ 1,220 $ 1,840Note: This is just one way of setting up the job-order cost sheets. You might prefer to keep the detail on the materials, labor, and overhead in beginning inventory costs.3. Since the Ladan and Myron jobs were completed, the others must still be in process. Therefore, the ending balance in Work in Process is the sum of the costs of the Coe, Walker, and Willis jobs.Coe $3,540Walker 1,220Willis 1,840Ending Work in Process $6,600Cost of Goods Sold = Ladan job + Myron job = $3,090 + $2,410 = $5,5004. Naman CompanyIncome StatementFor the Month Ended June 30, 20XXSales (1.5 ? $5,500) $8,250Cost of goods sold 5,500Gross margin $2,750Marketing and administrative expenses 1,200Operating income $1,5505–201. Overhead rate = $470,000/50,000 = $9.40 per MHr2. Department A: $250,000/40,000 = $6.25 per MHrDepartment B: $220,000/10,000 = $22.00 per MHr3. Job #73 Job #74Plantwide:70 ? $9.40 = $658 70 ? $9.40 = $658Departmental:20 ? $6.25 $ 125.00 50 ? $6.25 $ 312.5050 ? $22 1,100.00 20 ? $22 440.00$ 1,225.00 $ 752.50Department B appears to be more overhead intensive, so jobs spending more time in Department B ought to receive more overhead. Thus, departmental rates provide more accuracy.4. Plantwide rate: $250,000/40,000 = $6.25Department B: $62,500/10,000 = $6.25Job #73 Job #74Plantwide:70 ? $6.25 = $437.50 70 ? $6.25 = $437.50Departmental:20 ? $6.25 $ 125.00 50 ? $6.25 $ 312.5050 ? $6.25 312.50 20 ? $6.25 125.00$ 437.50 $ 437.50Assuming that machine hours is a good cost driver, the departmental rates reveal that overhead consumption is the same in each department. In this case, there is no need for departmental rates, and a plantwide rate is sufficient.5–41. Overhead rate = $470,000/50,000 = $9.40 per MHr2. Department A: $250,000/40,000 = $6.25 per MHrDepartment B: $220,000/10,000 = $22.00 per MHr3. Job #73 Job #74Plantwide:70 ? $9.40 = $658 70 ? $9.40 = $658Departmental:20 ? $6.25 $ 125.00 50 ? $6.25 $ 312.5050 ? $22 1,100.00 20 ? $22 440.00$ 1,225.00 $ 752.50Department B appears to be more overhead intensive, so jobs spending more time in Department B ought to receive more overhead. Thus, departmental rates provide more accuracy.4. Plantwide rate: $250,000/40,000 = $6.25Department B: $62,500/10,000 = $6.25Job #73 Job #74Plantwide:70 ? $6.25 = $437.50 70 ? $6.25 = $437.50Departmental:20 ? $6.25 $ 125.00 50 ? $6.25 $ 312.5050 ? $6.25 312.50 20 ? $6.25 125.00$ 437.50 $ 437.50Assuming that machine hours is a good cost driver, the departmental rates reveal that overhead consumption is the same in each department. In this case, there is no need for departmental rates, and a plantwide rate is sufficient.5–51. Last year’s unit-based overhead rate = $50,000/10,000 = $5This year’s unit-based overhead rate = $100,000/10,000 = $10Last Year This YearBike cost:2 ? $20 $ 40 $ 403 ? $12 36 36Overhead:5 ? $5 255 ? $10 50Total $101 $126Price last year = $101 ? 1.40 = $141.40/dayPrice this year = $126 ? 1.40 = $176.40/dayThis is a $35 increase over last year, nearly a 25 percent increase. No doubt the Carsons arenot pleased and would consider looking around for other recreational possibilities.2. Purchasing rate = $30,000/10,000 = $3 per purchase orderPower rate = $20,000/50,000 = $0.40 per kilowatt hourMaintenance rate = $6,000/600 = $10 per maintenance hourOther rate = $44,000/22,000 = $2 per DLHBike Rental Picnic CateringPurchasing$3 ? 7,000 $21,000$3 ? 3,000 $ 9,000Power$0.40 ? 5,000 2,000$0.40 ? 45,000 18,000Maintenance$10 ? 500 5,000$10 ? 100 1,000Other$2 ? 11,000 22,000 22,000Total overhead $50,000 $50,0003. This year’s bike rental overhead rate = $50,000/10,000 = $5Carson rental cost = (2 ? $20) + (3 ? $12) + (5 ? $5) = $101Price = 1.4 ? $101 = $141.40/day4. Catering rate = $50,000/11,000 = $4.55* per DLHCost of Estes job:Bike rental rate (2 ? $7.50) $15.00Bike conversion cost (2 ? $5.00) 10.00Catering materials 12.00Catering conversion (1 ? $4.55) 4.55Total cost $41.55*Rounded5. The use of ABC gives Mountain View Rentals a better idea of the types and costs of activities that are used in their business. Adding Level 4 bikes will increase the use of the most expensive activities, meaning that the rental rate will no longer be an average of $5 per rental day. Mountain View Rentals might need to set a Level 4 price based on the increased cost of both the bike and conversion cost.分步成本法6–11. Cutting Sewing PackagingDepartment Department DepartmentDirect materials $5,400 $ 900 $ 225Direct labor 150 1,800 900Applied overhead 750 3,600 900Transferred-in cost:From cutting 6,300From sewing 12,600Total manufacturing cost $6,300 $12,600 $14,6252. a. Work in Process—Sewing 6,300Work in Process—Cutting 6,300b. Work in Process—Packaging 12,600Work in Process—Sewing 12,600c. Finished Goods 14,625Work in Process—Packaging 14,625 3. Unit cost = $14,625/600 = $24.38* per pair6–21. Units transferred out: 27,000 + 33,000 – 16,200 = 43,8002. Units started and completed: 43,800 – 27,000 = 16,8003. Physical flow schedule:Units in beginning work in process 27,000Units started during the period 33,000Total units to account for 60,000Units started and completed 16,800Units completed from beginning work in process 27,000Units in ending work in process 16,200Total units accounted for 60,0004. Equivalent units of production:Materials ConversionUnits completed 43,800 43,800Add: Units in ending work in process:(16,200 ? 100%) 16,200(16,200 ? 25%) 4,050 Equivalent units of output 60,000 47,8506–31. Physical flow schedule:Units to account for:Units in beginning work in process 80,000Units started during the period 160,000Total units to account for 240,000Units accounted for:Units completed and transferred out:Started and completed 120,000From beginning work in process 80,000 200,000 Units in ending work in process 40,000Total units accounted for 240,0002. Units completed 200,000Add: Units in ending WIP ? Fraction complete(40,000 ? 20%) 8,000Equivalent units of output 208,0003. Unit cost = ($374,400 + $1,258,400)/208,000 = $7.854. Cost transferred out = 200,000 ? $7.85 = $1,570,000Cost of ending WIP = 8,000 ? $7.85 = $62,8005. Costs to account for:Beginning work in process $ 374,400Incurred during June 1,258,400Total costs to account for $ 1,632,800Costs accounted for:Goods transferred out $ 1,570,000Goods in ending work in process 62,800Total costs accounted for $ 1,632,8006–31、Units t0 account for:Units in beginning work in process(25% completed) 10000Units started during the period 70000 Total units to account for 80000 Units accounted forUnits completed and transferred outStarted and completed 50000From beginning work in process 10000 60000 Units in ending work in process(60% completed) 20000 Total units accounted for 80000 2、60000+20000×60%=72000（units）3、Unit cost for materials:（$/unit）Unit cost for convension:（$/unit）Total unit cost:5+1.13=6.13（$/unit）4、The cost of units of transferred out:60000×6.13=367800($)The cost of units of ending work in process:20000×5+20000×20%×1.13=113560($)作业成本法4–21. Predetermined rates:Drilling Department: Rate = $600,000/280,000 = $2.14* per MHrAssembly Department: Rate = $392,000/200,000= $1.96 per DLH*Rounded2. Applied overhead:Drilling Department: $2.14 ? 288,000 = $616,320Assembly Department: $1.96 ? 196,000 = $384,160Overhead variances:Drilling Assembly TotalActual overhead $602,000 $ 412,000 $ 1,014,000Applied overhead 616,320 384,160 1,000,480Overhead variance $ (14,320) over $ 27,840 under $ 13,5203. Unit overhead cost = [($2.14 ? 4,000) + ($1.96 ? 1,600)]/8,000= $11,696/8,000= $1.46**Rounded4–31. Yes. Since direct materials and direct labor are directly traceable to each product, their cost assignment should be accurate.2. Elegant: (1.75 ? $9,000)/3,000 = $5.25 per briefcaseFina: (1.75 ? $3,000)/3,000 = $1.75 per briefcaseNote: Overhead rate = $21,000/$12,000 = $1.75 per direct labor dollar (or 175 percent of direct labor cost).There are more machine and setup costs assigned to Elegant than Fina. This is clearly a distortion because the production of Fina is automated and uses the machine resources much more than the handcrafted Elegant. In fact, the consumption ratio for machining is 0.10 and 0.90 (using machine hours as the measure of usage). Thus, Fina uses nine times the machining resources as Elegant. Setup costs are similarly distorted. The products use an equal number of setups hours. Yet, if direct labor dollars are used, then the Elegant briefcase receives three times more machining costs than the Fina briefcase.3. Overhead rate = $21,000/5,000= $4.20 per MHrElegant: ($4.20 ? 500)/3,000 = $0.70 per briefcaseFina: ($4.20 ? 4,500)/3,000 = $6.30 per briefcaseThis cost assignment appears more reasonable given the relative demands each product places on machine resources. However, once a firm moves to a multiproduct setting, using only one activity driver to assign costs will likely produce product cost distortions. Products tend to make different demands on overhead activities, and this should be reflected in overhead cost assignments. Usually, this means the use of both unit- and nonunit-level activity drivers. In this example, there is a unit-level activity (machining) and a nonunit-level activity (setting up equipment). The consumption ratios for each (using machine hours and setup hours as the activity drivers) are as follows:Elegant FinaMachining 0.10 0.90 (500/5,000 and 4,500/5,000)Setups 0.50 0.50 (100/200 and 100/200)Setup costs are not assigned accurately. Two activity rates are needed—one based on machine hours and the other on setup hours:Machine rate: $18,000/5,000 = $3.60 per MHrSetup rate: $3,000/200 = $15 per setup hourCosts assigned to each product:Machining: Elegant Fina$3.60 ? 500 $ 1,800$3.60 ? 4,500 $ 16,200Setups:$15 ? 100 1,500 1,500Total $ 3,300 $ 17,700Units ÷3,000 ÷3,000Unit overhead cost $ 1.10 $ 5.904：Elegant Unit overhead cost：[9000+3000+18000*500/5000+3000/2]/3000=$5.1 Fina Unit overhead cost：[3000+3000+18000*4500/5000+3000/2]/3000=$7.94–51. Deluxe Percent Regular PercentPrice $900 100% $750 100%Cost 576 64 600 80Unit gross profit $324 36% $150 20%Total gross profit:($324 ? 100,000) $32,400,000($150 ? 800,000) $120,000,0002. Calculation of unit overhead costs:Deluxe gularUnit-level:Machining:$200 ? 100,000 $20,000,000$200 ? 300,000 $60,000,000Batch-level:Setups:$3,000 ? 300 900,000$3,000 ? 200 600,000Packing:$20 ? 100,000 2,000,000$20 ? 400,000 8,000,000Product-level:Engineering:$40 ? 50,000 2,000,000$40 ? 100,000 4,000,000Facility-level:Providing space:$1 ? 200,000 200,000$1 ? 800,000 800,000Total overhead $25,100,000 $73,400,000Units ÷100,000 ÷800,000Overhead per unit $251 $91.75Deluxe Percent Regular PercentPrice $900 100% $750.00 100%Cost 780* 87*** 574.50** 77***Unit gross profit $120 13%*** $175.50 23%***Total gross profit:($120 ? 100,000) $12,000,000($175.50 ? 800,000) $140,400,000*$529 + $251**$482.75 + $91.753. Using activity-based costing, a much different picture of the deluxe and regular products emerges. The regular model appears to be more profitable. Perhaps it should be emphasized.4–61. JIT Non-JITSalesa $12,500,000 $12,500,000Allocationb 750,000 750,000a$125 ? 100,000, where $125 = $100 + ($100 ? 0.25), and 100,000 is the average order size times the number of ordersb0.50 ? $1,500,0002. Activity rates:Ordering rate = $880,000/220 = $4,000 per sales orderSelling rate = $320,000/40 = $8,000 per sales callService rate = $300,000/150 = $2,000 per service callJIT Non-JITOrdering costs:$4,000 ? 200 $ 800,000$4,000 ? 20 $ 80,000Selling costs:$8,000 ? 20 160,000$8,000 ? 20 160,000Service costs:$2,000 ? 100 200,000$2,000 ? 50 100,000Total $1,160,000 $340,0 0For the non-JIT customers, the customer costs amount to $750,000/20 = $37,500 per order under the original allocation. Using activity assign?ments, this drops to $340,000/20 = $17,000 per order, a difference of $20,500 per order. For an order of 5,000 units, the order price can be decreased by $4.10 per unit without affecting customer profitability. Overall profitability will decrease, however, unless the price for orders is increased to JIT customers.3. It sounds like the JIT buyers are switching their inventory carrying costs to Emery without any significant benefit to Emery. Emery needs to increase prices to reflect the additional demands on customer-support activities. Furthermore, additional price increases may be needed to reflectthe increased number of setups, purchases, and so on, that are likely occurring inside the plant. Emery should also immediately initiate discussions with its JIT customers to begin negotiations for achieving some of the benefits that a JIT supplier should have, such as long-term contracts. The benefits of long-term contracting may offset most or all of the increased costs from the additional demands made on other activities.4–71. Supplier cost:First, calculate the activity rates for assigning costs to suppliers:Inspecting components: $240,000/2,000 = $120 per sampling hourReworking products: $760,500/1,500 = $507 per rework hourWarranty work: $4,800/8,000 = $600 per warranty hourNext, calculate the cost per component by supplier:Supplier cost:Vance FoyPurchase cost:$23.50 ? 400,000 $ 9,400,000$21.50 ? 1,600,000 $ 34,400,000Inspecting components:$120 ? 40 4,800$120 ? 1,960 235,200Reworking products:$507 ? 90 45,630$507 ? 1,410 714,870Warranty work:$600 ? 400 240,000$600 ? 7,600 4,560,000Total supplier cost $ 9,690,430 $ 39,910,070Units supplied ÷400,000 ÷1,600,000Unit cost $ 24.23* $ 24.94**RoundedThe difference is in favor of Vance; however, when the price concession is considered, the cost of Vance is $23.23, which is less than Foy’s component. Lumus should accept the contractual offer made by Vance.4–7 Concluded2. Warranty hours would act as the best driver of the three choices. Using this driver, the rate is $1,000,000/8,000 = $125 per warranty hour. The cost assigned to each component would be:Vance FoyLost sales:$125 ? 400 $ 50,000$125 ? 7,600 $ 950,000$ 50,000 $ 950,000Units supplied ÷400,000 ÷1,600,000Increase in unit cost $ 0.13* $ 0.59**Rounded$0.075 per unitCategory II: $45/1,000 = $0.045 per unitCategory III: $45/1,500 = $0.03 per unitCategory I, which has the smallest batches, is the most undercosted of the three categories. Furthermore, the unit ordering cost is quite high relative to Category I’s selling price (9 to 15 percent of the selling price). This suggests that something should be done to reduce the order-filling costs.3. With the pricing incentive feature, the average order size has been increased to 2,000 units for all three product families. The number of orders now processed can be calculated as follows:Orders = [(600 ? 50,000) + (1,000 ? 30,000) + (1,500 ? 20,000)]/2,000= 45,000Reduction in orders = 100,000 – 45,000 = 55,000Steps that can be reduced = 55,000/2,000 = 27 (rounding down to nearest whole number)There were initially 50 steps: 100,000/2,000Reduction in resource spending:Step-fixed costs: $50,000 ? 27 = $1,350,000Variable activity costs: $20 ? 55,000 = 1,100,000$2,450,000预算9-4Norton, Inc.Sales Budget For the Coming YearModel Units Price Total SalesLB-1 50,400 $29.00 $1,461,600LB-2 19,800 15.00 297,000WE-6 25,200 10.40 262,080 WE-7 17,820 10.00 178,200 WE-8 9,600 22.00 211,200 WE-9 4,000 26.00 104,000 Total $2,514,080二、1. Raylene’s Flowers and GiftsProduction Budget for Gift BasketsFor September, October, November, and DecemberSept. Oct. Nov. D ec.Sales 200 150 180 250Desired ending inventory 15 18 25 10Total needs 215 168 205 260Less: Beginning inventory 20 15 18 25 Units produced 195 153 187 2352. Raylene’s Flowers and GiftsDirect Materials Purchases BudgetFor September, October, and NovemberFruit: Sept. Oct. Nov.Production 195 153 187? Amount/basket (lbs.) ? 1 ? 1 ?1Needed for production 195 153 187Desired ending inventory 8 9 12Needed 203 162 200Less: Beginning inventory 10 8 9Purchases193 154 190Small gifts: Sept. Oct. Nov.Production 195 153 187 ? Amount/basket (items) ? 5 ? 5 ? 5Needed for production 975 765 935Desired ending inventory 383 468 588Needed 1,358 1,233 1,523Less: Beginning inventory 488 383 468Purchases 870 850 1,055Cellophane: Sept. Oct. Nov.Production 195 153 187。
管理会计(英文版)课后习题答案(高等教育出版社)chapter 16
管理会计（高等教育出版社）于增彪（清华大学）改编余绪缨（厦门大学）审校CHAPTER 16COST-VOLUME-PROFIT ANALYSIS: A MANAGERIAL PLANNING TOOL QUESTIONS FOR WRITING AND DISCUSSION1.CVP analysis allows managers to focus onselling prices, volume, costs, profits, and sales mix. Many diffe rent “what if” questions can be asked to assess the effect on profits of changes in key variables.2.The units-sold approach defines sales vo-lume in terms of units of product and gives answers in these same terms. The sales-revenue approach defines sales volume in terms of revenues and provides answers in these same terms.3.Break-even point is the level of sales activitywhere total revenues equal total costs, or where zero profits are earned.4.At the break-even point, all fixed costs arecovered. Above the break-even point, only variable costs need to be covered. Thus, contribution margin per unit is profit per unit, provided that the unit selling price is greater than the unit variable cost (which it must be for break-even to be achieved).5.Profit = $7.00 ⨯ 5,000 = $35,0006.Variable cost ratio = Variable costs/Sales.Contribution margin ratio = Contribution margin/Sales. Contribution margin ratio = 1 –Variable cost ratio.7.Break-even revenues = $20,000/0.40 =$50,0008.No. The increase in contribution is $9,000(0.30 ⨯ $30,000), and the increase in adver-tising is $10,000.9.Sales mix is the relative proportion sold ofeach product. For example, a sales mix of3:2 means that three units of one productare sold for every two of the second product.10.Packages of products, based on the ex-pected sales mix, are defined as a singleproduct. Selling price and cost informationfor this package can then be used to carryout CVP analysis.11.Package contribution margin: (2 ⨯ $10) + (1⨯ $5) = $25. Break-even point = $30,000/$25= 1,200 packages, or 2,400 units of A and1,200 units of B.12.Profit = 0.60($200,000 – $100,000) =$60,00013. A change in sales mix will change the contri-bution margin of the package (defined by thesales mix) and, thus, will change the unitsneeded to break even.14.Margin of safety is the sales activity inexcess of that needed to break even. Thehigher the margin of safety, the lower therisk.15.Operating leverage is the use of fixed coststo extract higher percentage changes inprofits as sales activity changes. It isachieved by increasing fixed costs while lo-wering variable costs. Therefore, increasedleverage implies increased risk, and viceversa.16.Sensitivity analysis is a “what if” techniquethat examines the impact of changes in un-derlying assumptions on an answer. A com-pany can input data on selling prices, varia-ble costs, fixed costs, and sales mix and setup formulas to calculate break-even pointsand expected profits. Then, the data can bevaried as desired to see what impactchanges have on the expected profit.17.By specifically including the costs that varywith nonunit drivers, the impact of changesin the nonunit drivers can be examined. Intraditional CVP, all nonunit costs are lumpedtogether as “fixed costs.” While the costs arefixed with respect to units, they vary with re-spect to other drivers. ABC analysis remindsus of the importance of these nonunit driversand costs.18.JIT simplifies the firm’s cost equation sincemore costs are classified as fixed (e.g., di-rect labor). Additionally, the batch-level vari-able is gone (in JIT, the batch is one unit).Thus, the cost equation for JIT includes fixedcosts, unit variable cost times the number ofunits sold, and unit product-level cost timesthe number of products sold (or related cost driver). JIT means that CVP analysis ap-proaches the standard analysis with fixed and unit-level costs only.EXERCISES 16–11. e2. c3. d4. b5. a16–21. f2. d3. b4. a5. g6. e7. c16–31. Units = Fixed cost/Contribution margin= $10,350/($15 – $12)= 3,4502. Sales (3,450 ⨯ $15) $51,750Variable costs (3,450 ⨯ $12) 41,400Contribution margin $ 10,350Fixed costs 10,350Operating income $ 03. Units = (Target income + Fixed cost)/Contribution margin= ($9,900 + $10,350)/($15 – $12)= $20,250/$3= 6,7501. Contribution margin per unit = $15 – $12 = $3Contribution margin ratio = $3/$15 = 0.20, or 20%2. Variable cost ratio = $60,000/$75,000 = 0.80, or 80%3. Revenue = Fixed cost/Contribution margin ratio= $10,350/0.20= $51,7504. Revenue = (Target income + Fixed cost)/Contribution margin ratio= ($9,900 + $10,350)/0.20= $101,25016–51. 0.15($15)(Units) = $15(Units) – $12(Units) – $10,350$2.25(Units) = $3(Units) – $10,350$10,350 = $0.75(Units)Units = 13,8002. Sales (13,800 ⨯ $15) $ 207,000Variable costs (13,800 ⨯ $12) 165,600Contribution margin $ 41,400Fixed costs 10,350Operating income $ 31,050$31,050 does equal 15% of $207,000, so the answer of 13,800 units is correct.1. Before-tax income = (After-tax income)/(1 – Tax rate)= $6,000/(1 – 0.40)= $10,000Units = (Target income + Fixed cost)/Contribution margin= ($10,000 + $10,350)/($15 – $12)= 6,783**The answer is 6,783.3333, and so it must be rounded to a whole unit. You may prefer that students round up the answer to 6,784, instead, since it is better to be marginally above break-even than marginally below it.2. Before-tax income = (After-tax income)/(1 – Tax rate)= $6,000/(1 – 0.50)= $12,000Units = (Target income + Fixed cost)/Contribution margin= ($12,000 + $10,350)/($15 – $12)= 7,4503. Before-tax income = (After-tax income)/(1 – Tax rate)= $6,000/(1 – 0.30)= $8,571Units = (Target income + Fixed cost)/Contribution margin= ($8,571 + $10,350)/($15 – $12)= 6,30716–71. Break-even units = Fixed costs/(Price – Variable cost)= $150,000/($2.45 – $1.65)= $150,000/$0.80= 187,5002. Units = ($150,000 + $12,600)/($2.45 – $1.65)= $162,600/$0.80= 203,2503. Unit variable cost = $1.65Unit variable manufacturing cost = $1.65 – $0.17 = $1.48The unit variable cost is used in cost-volume-profit analysis, since it includes all of the variable costs of the firm.1. Before-tax income = $25,200/(1 – 0.40) = $42,000Units = ($150,000 + $42,000)/$0.80= $192,000/$0.80= 240,0002. Before-tax income = $25,200/(1 – 0.30) = $36,000Units = ($150,000 + $36,000)/$0.80= $186,000/$0.80= 232,5003. Before-tax income = $25,200/(1 – 0.50) = $50,400Units = ($150,000 + $50,400)/$0.80= $200,400/$0.80= 250,5004. 215,000 – 187,500 = 27,500 pansor$526,750 – $459,375 = $67,375A B C D Sales $ 5,000 $ 15,600* $ 16,250* $9,000 Variable costs 4,000 11,700 9,750 5,400* Contribution margin $ 1,000 $ 3,900 $ 6,500* $3,600* Fixed costs 500* 4,000 6,100* 750 Operating income (loss) $ 500 $ (100)* $ 400 $2,850 Units sold 1,000* 1,300 125 90 Price/unit $5 $12* $130 $100* Variable cost/unit $4* $9 $78* $60* Contribution margin/unit $1* $3 $52* $40* Contribution margin ratio 20%* 25%* 40% 40%* Break-even in units 500* 1,334* 118* 19* *Designates calculated amount.Note: When the calculated break-even in units includes a fractional amount, it has been rounded up to the next whole unit.16–101. Variable cost ratio = Variable costs/Sales= $399,900/$930,000= 0.43, or 43%Contribution margin ratio = (Sales – Variable costs)/Sales= ($930,000 – $399,900)/$930,000= 0.57, or 57%2. Break-even sales revenue = $307,800/0.57 = $540,0003. Margin of safety = Sales – Break-even sales= $930,000 – $540,000 = $390,0004. Contribution margin from increased sales = ($7,500)(0.57) = $4,275Cost of advertising = $5,000No, the advertising campaign is not a good idea, because the company’s o p-erating income will decrease by $725 ($4,275 – $5,000).1. Income = Revenue – Variable cost – Fixed cost0 = 1,500P – $300(1,500) – $120,0000 = 1,500P – $450,000 – $120,000$570,000 = 1,500PP = $3802. $160,000/($3.50 – Unit variable cost) = 128,000 unitsUnit variable cost = $2.2516–121. Contribution margin per unit = $5.60 – $4.20*= $1.40*Variable costs per unit:$0.70 + $0.35 + $1.85 + $0.34 + $0.76 + $0.20 = $4.20Contribution margin ratio = $1.40/$5.60 = 0.25 = 25%2. Break-even in units = ($32,300 + $12,500)/$1.40 = 32,000 boxesBreak-even in sales = 32,000 ⨯ $5.60 = $179,200or= ($32,300 + $12,500)/0.25 = $179,2003. Sales ($5.60 ⨯ 35,000) $ 196,000Variable costs ($4.20 ⨯ 35,000) 147,000Contribution margin $ 49,000Fixed costs 44,800Operating income $ 4,2004. Margin of safety = $196,000 – $179,200 = $16,8005. Break-even in units = 44,800/($6.20 – $4.20) = 22,400 boxesNew operating income = $6.20(31,500) – $4.20(31,500) – $44,800= $195,300 – $132,300 – $44,800 = $18,200 Yes, operating income will increase by $14,000 ($18,200 – $4,200).1. Variable cost ratio = $126,000/$315,000 = 0.40Contribution margin ratio = $189,000/$315,000 = 0.602. $46,000 ⨯ 0.60 = $27,6003. Break-even revenue = $63,000/0.60 = $105,000Margin of safety = $315,000 – $105,000 = $210,0004. Revenue = ($63,000 + $90,000)/0.60= $255,0005. Before-tax income = $56,000/(1 – 0.30) = $80,000Note: Tax rate = $37,800/$126,000 = 0.30Revenue = ($63,000 + $80,000)/0.60 = $238,333Sales ............................................................................... $ 238,333 Less: Variable expenses ($238,333 ⨯ 0.40) ................. 95,333 Contribution margin ...................................................... $ 143,000 Less: Fixed expenses ................................................... 63,000 Income before income taxes ........................................ $ 80,000 Income taxes ($80,000 ⨯ 0.30) ...................................... 24,000 Net income ................................................................ $ 56,0001. Operating income = Revenue(1 – Variable cost ratio) – Fixed cost(0.20)Revenue = Revenue(1 – 0.40) – $24,000(0.20)Revenue = (0.60)Revenue – $24,000(0.40)Revenue = $24,000Revenue = $60,000Sales ............................................................................... $ 60,000Variable expenses ($60,000 ⨯ 0.40) .............................. 24,000Contribution margin ...................................................... $ 36,000Fixed expenses .............................................................. 24,000 Operating income ..................................................... $ 12,000 $12,000 = $60,000 ⨯ 20%2. If revenue of $60,000 produces a profit equal to 20 percent of sales and if theprice per unit is $10, then 6,000 units must be sold. Let X equal number of units, then:Operating income = (Price – Variable cost) – Fixed cost0.20($10)X = ($10 – $4)X – $24,000$2X = $6X – $24,000$4X = $24,000X = 6,000 buckets0.25($10)X = $6X – $24,000$2.50X = $6X – $24,000$3.50X = $24,000X = 6,857 bucketsSales (6,857 ⨯ $10) ......................................................... $68,570Variable expenses (6,857 ⨯ $4) ..................................... 27,428Contribution margin ...................................................... $41,142Fixed expenses .............................................................. 24,000 Operating income ..................................................... $17,142 $17,142* = 0.25 ⨯ $68,570 as claimed*Rounded down.Note: Some may prefer to round up to 6,858 units. If this is done, the operat-ing income will be slightly different due to rounding.16–14 Concluded3. Net income = 0.20Revenue/(1 – 0.40)= 0.3333Revenue0.3333Revenue = Revenue(1 – 0.40) – $24,0000.3333Revenue = 0.60Revenue – $24,0000.2667Revenue = $24,000Revenue = $89,98916–151. Company A: $100,000/$50,000 = 2Company B: $300,000/$50,000 = 62. Company BX = $50,000/(1 – 0.80) X = $250,000/(1 – 0.40)X = $50,000/0.20 X = $250,000/0.60X = $250,000 X = $416,667Company B must sell more than Company A to break even because it must cover $200,000 more in fixed costs (it is more highly leveraged).3. Company A: 2 ⨯ 50% = 100%Company B: 6 ⨯ 50% = 300%The percentage increase in profits for Company B is much higher than Com-pany A’s increase because Company B has a higher degree of oper ating leve-rage (i.e., it has a larger amount of fixed costs in proportion to variable costs as compared to Company A). Once fixed costs are covered, additional reve-nue must cover only variable costs, and 60 percent of Company B’s revenue above break-even is profit, whereas only 20 perce nt of Company A’s revenue above break-even is profit.1. Variable Units in PackageProduct Price* –Cost = CM ⨯Mix = CM Scientific $25 $12 $13 1 $13 Business 20 9 11 5 55 Total $68 *$500,000/20,000 = $25$2,000,000/100,000 = $20X = ($1,080,000 + $145,000)/$68X = $1,225,000/$68X = 18,015 packages18,015 scientific calculators (1 ⨯ 18,015)90,075 business calculators (5 ⨯ 18,015)2. Revenue = $1,225,000/0.544* = $2,251,838*($1,360,000/$2,500,000) = 0.5441. Sales mix is 2:1 (Twice as many videos are sold as equipment sets.)2. Variable SalesP roduct Price –Cost = CM ⨯Mix = Total CM Videos $12 $4 $8 2 $16 Equipment sets 15 6 9 1 9 Total $25 Break-even packages = $70,000/$25 = 2,800Break-even videos = 2 ⨯ 2,800 = 5,600Break-even equipment sets = 1 ⨯ 2,800 = 2,8003. Switzer CompanyIncome StatementFor Last YearSales .......................................................................................... $ 195,000Less: Variable costs ................................................................. 70,000Contribution margin ................................................................. $ 125,000Less: Fixed costs ..................................................................... 70,000 Operating income ................................................................ $ 55,000 Contribution margin ratio = $125,000/$195,000 = 0.641, or 64.1%Break-even sales revenue = $70,000/0.641 = $109,2044. Margin of safety = $195,000 – $109,204 = $85,7961. Sales mix is 2:1:4 (Twice as many videos will be sold as equipment sets, andfour times as many yoga mats will be sold as equipment sets.)2. Variable SalesP roduct Price –Cost = CM ⨯Mix = Total CM Videos $12 $ 4 $8 2 $16 Equipment sets 15 6 9 1 9 Yoga mats 18 13 5 4 20 Total $45 Break-even packages = $118,350/$45 = 2,630Break-even videos = 2 ⨯ 2,630 = 5,260Break-even equipment sets = 1 ⨯ 2,630 = 2,630Break-even yoga mats = 4 ⨯ 2,630 = 10,5203. Switzer CompanyIncome StatementFor the Coming YearSales .......................................................................................... $555,000Less: Variable costs ................................................................. 330,000Contribution margin ................................................................. $225,000Less: Fixed costs ..................................................................... 118,350 Operating income ................................................................ $106,650 Contribution margin ratio = $225,000/$555,000 = 0.4054, or 40.54%Break-even revenue = $118,350/0.4054 = $291,9344. Margin of safety = $555,000 – $291,934 = $263,0661. Contribution margin/unit = $410,000/100,000 = $4.10Contribution margin ratio = $410,000/$650,000 = 0.6308Break-even units = $295,200/$4.10 = 72,000 unitsBreak-even revenue = 72,000 ⨯ $6.50 = $468,000or= $295,200/0.6308 = $467,977**Difference due to rounding error in calculating the contribution margin ratio.2. The break-even point decreases:X = $295,200/(P – V)X = $295,200/($7.15 – $2.40)X = $295,200/$4.75X = 62,147 unitsRevenue = 62,147 ⨯ $7.15 = $444,3513. The break-even point increases:X = $295,200/($6.50 – $2.75)X = $295,200/$3.75X = 78,720 unitsRevenue = 78,720 ⨯ $6.50 = $511,68016–19 Concluded4. Predictions of increases or decreases in the break-even point can be madewithout computation for price changes or for variable cost changes. If both change, then the unit contribution margin must be known before and after to predict the effect on the break-even point. Simply giving the direction of the change for each individual component is not sufficient. For our example, the unit contribution changes from $4.10 to $4.40, so the break-even point in units will decrease.Break-even units = $295,200/($7.15 – $2.75) = 67,091Now, let’s look at the break-even point in revenues. We might expect that it, too, will decrease. However, that is not the case in this particular example.Here, the contribution margin ratio decreased from about 63 percent to just over 61.5 percent. As a result, the break-even point in revenues has gone up.B reak-even revenue = 67,091 $7.15 = $479,7015. The break-even point will increase because more units will need to be sold tocover the additional fixed expenses.Break-even units = $345,200/$4.10 = 84,195 unitsRevenue = $547,26816–201.Break-even point = 2,500 units; + line is total revenue and x line is total costs.2. a. Fixed costs increase by $5,000:Break-even point = 3,750 unitsb. Unit variable cost increases to $7:Break-even point = 3,333 unitsc. Unit selling price increases to $12:Break-even point = 1,667 unitsd. Both fixed costs and unit variable cost increase:Break-even point = 5,000 units3. Original data:-$10,000$0$10,000Break-even point = 2,500 unitsa. Fixed costs increase by $5,000:-$15,000$0$15,000Break-even point = 3,750 unitsb. Unit variable cost increases to $7:-$10,000$0$10,000Break-even point = 3,333 unitsc.-$10,000$0$10,000Break-even point = 1,667 unitsd. Both fixed costs and unit variable cost increase:-$15,000$0$15,000Break-even point = 5,000 units4. The first set of graphs is more informative since these graphs reveal howcosts change as sales volume changes.1. Unit contribution margin = $1,060,000/50,000 = $21.20Break-even units = $816,412/$21.20 = 38,510 unitsOperating income = 30,000 ⨯ $21.20 = $636,0002. CM ratio = $1,060,000/$2,500,000 = 0.424 or 42.4%Break-even point = $816,412/0.424 = $1,925,500Operating income = ($200,000 ⨯ 0.424) + $243,588 = $328,3883. Margin of safety = $2,500,000 – $1,925,500 = $574,5004. $1,060,000/$243,588 = 4.352 (operating leverage)4.352 ⨯ 20% = 0.87040.8704 ⨯ $243,588 = $212,019New operating income level = $212,019 + $243,588 = $455,6075. Let X = Units0.10($50)X = $50.00X – $28.80X – $816,412$5X = $21.20X – $816,412$16.20X = $816,412X = 50,396 units6. Before-tax income = $180,000/(1 – 0.40) = $300,000X = ($816,412 + $300,000)/$21.20 = 52,661 units1. Variable Sales PackageP roduct Price –Cost = CM ⨯Mix = CM Vases $40 $30 $10 2 $20 Figurines 70 42 28 1 28 Total $48 Break-even packages = $30,000/$48 = 625Break-even vases = 2 ⨯ 625 = 1,250Break-even figurines = 6252. The new sales mix is 3 vases to 2 figurines.Variable Sales Package P roduct Price –Cost = CM ⨯Mix = CM Vases $40 $30 $10 3 $30 Figurines 70 42 28 2 56 Total $86 Break-even packages = $35,260/$86 = 410Break-even vases = 3 ⨯ 410 = 1,230Break-even figurines = 2 ⨯ 410 = 82016–231. d2. c3. a4. d5. e6. b7. cPROBLEMS16–241. Unit contribution margin = $825,000/110,000 = $7.50Break-even point = $495,000/$7.50 = 66,000 unitsCM ratio = $7.50/$25 = 0.30Break-even point = $495,000/0.30 = $1,650,000or= $25 ⨯ 66,000 = $1,650,0002. Increased CM ($400,000 ⨯ 0.30) $ 120,000Less: Increased advertising expense 40,000Increased operating income $ 80,0003. $315,000 ⨯ 0.30 = $94,5004. Before-tax income = $360,000/(1 – 0.40) = $600,000Units = ($495,000 + $600,000)/$7.50= 146,0005. Margin of safety = $2,750,000 – $1,650,000 = $1,100,000or= 110,000 units – 66,000 units = 44,000 units6. $825,000/$330,000 = 2.5 (operating leverage)20% ⨯ 2.5 = 50% (profit increase)16–251. Sales mix:Squares: $300,000/$30 = 10,000 unitsCircles: $2,500,000/$50 = 50,000 unitsSales Total Product P –V* = P – V ⨯ Mix = CM Squares $30 $10 $20 1 $ 20 Circles 50 10 40 5 200 Package $220 *$100,000/10,000 = $10$500,000/50,000 = $10Break-even packages = $1,628,000/$220 = 7,400 packagesBreak-even squares = 7,400 ⨯ 1 = 7,400Break-even circles = 7,400 ⨯ 5 = 37,0002. Contribution margin ratio = $2,200,000/$2,800,000 = 0.78570.10Revenue = 0.7857Revenue – $1,628,0000.6857Revenue = $1,628,000Revenue = $2,374,2163. New mix:Sales Total Product P –V = P – V ⨯ Mix = CM Squares $30 $10 $20 3 $ 60 Circles 50 10 40 5 200 Package $260 Break-even packages = $1,628,000/$260 = 6,262 packagesBreak-even squares = 6,262 ⨯ 3 = 18,786Break-even circles = 6,262 ⨯ 5 = 31,310CM ratio = $260/$340* = 0.7647*(3)($30) + (5)($50) = $340 revenue per package0.10Revenue = 0.7647Revenue – $1,628,0000.6647Revenue = $1,628,000Revenue = $2,449,2254. Increase in CM for squares (15,000 ⨯ $20) $ 300,000Decrease in CM for circles (5,000 ⨯ $40) (200,000)Net increase in total contribution margin $ 100,000Less: Additional fixed expenses 45,000Increase in operating income $ 55,000Gosnell would gain $55,000 by increasing advertising for the squares. This isa good strategy.16–261. Currently:Sales (830,000 ⨯ $0.36) $ 298,800Variable expenses 224,100Contribution margin $ 74,700Fixed expenses 54,000Operating income $ 20,700New contribution margin = 1.5 ⨯ $74,700 = $112,050$112,050 – promotional spending – $54,000 = 1.5 ⨯ $20,700Promotional spending = $27,0002. Here are two ways to calculate the answer to this question:a. The per-unit contribution margin needs to be the same:Let P* represent the new price and V* the new variable cost.(P – V) = (P* – V*)$0.36 – $0.27 = P* – $0.30$0.09 = P* – $0.30P* = $0.39b. Old break-even point = $54,000/($0.36 – $0.27) = 600,000New break-even point = $54,000/(P* – $0.30) = 600,000P* = $0.39The selling price should be increased by $0.03.3. Projected contribution margin (700,000 ⨯ $0.13) $91,000Present contribution margin 74,700Increase in operating income $16,300The decision was good because operating income increased by $16,300.(New quantity ⨯ $0.13) – $54,000 = $20,700New quantity = 574,615Selling 574,615 units at the new price will maintain profit at $20,700.16–271. P –V = P – V ⨯Mix = TotalResidential $540.00a$221.64c$318.36 2 $636.72 Commercial 160.00b124.52c35.48 1 35.48 Package $672.20 a$13.50 ⨯ 10 ⨯ 4b$40 ⨯ 4c Cost per acre for four applicationsCommercialChemicals $ 70.00 $ 70.00 [$40 + (3 ⨯ $10)] Labor* 80.00 18.00Operating expenses** 55.12 20.00Supplies** 16.52 16.52Total $ 221.64 $ 124.52*10/3 ⨯ $6.00 ⨯ 4; 3/4 ⨯ $6.00 ⨯ 4**The per-acre amount ⨯ 4 applicationsX = F/(P – V)= $39,708/$672.20 = 59* packagesResidential: 2 ⨯ 59 = 118 acresCommercial: 1 ⨯ 59 = 59 acresAverage number of residential customers = 118/0.10 = 1,180*Rounded2. Hours needed to service break-even volume (in packages):Residential: 10/3 ⨯ 4 ⨯ 2 = 26.67* hoursCommercial: 3/4 ⨯ 4 ⨯ 1 = 3.00 hours29.67 hours per packageTotal hours required = 29.67 ⨯ 59 = 1,751 hoursHours per employee = 8 ⨯ 140 = 1,120Employees needed = 1,751/1,120 = 1.6 laborersOne employee is not sufficient.Volume/Employee = 1,120/29.67 = 38 packages. Thus, if volume exceeds 38 composite units (76 residential and 38 commercial), a second laborer is needed (at least part time).*RoundedNote: Adding another employee could affect the costs used in the initial anal-ysis; for example: (1) another truck might be added (increasing fixed costs and the break-even point; (2) a two-man crew might be used (increasing variable costs); (3) the new employee might work evenings/weekends (no change in either fixed or variable costs). CVP used for planning is often an iterative process—the original solution may raise problems that may call for a recal-culation, altering plans further.3. The mix is redefined to be 1.2:0.8:1.0.P roduct P –V = P – V ⨯Mix = Total CM Res.-1 $135.00 $ 77.91* $ 57.09 1.2 $ 68.51 Res.-4 540.00 221.64 318.36 0.8 254.69 Comm. 160.00 124.52 35.48 1.0 35.48 Package $ 358.68 *Variable cost for one-time residential application:Chemicals $40.00Labor 20.00Operating expenses 13.78Supplies 4.13TotalX = F/(P – V) = $39,708/$358.68 = 111 packagesResidential (one application): 1.2 ⨯ 111 = 133 acresResidential (four applications): 0.8 ⨯ 111 = 89 acresCommercial: 1 ⨯ 111 = 111 acres1. Contribution margin ratio = $487,548/$840,600 = 0.582. Revenue = $250,000/0.58 = $431,0343. Operating income = CMR ⨯ Revenue – Total fixed cost0.08R/(1 – 0.34) = 0.58R – $250,0000.1212R = 0.58R – $250,0000.4588R = $250,000R = $544,9004. $840,600 ⨯ 110% = $924,660$353,052 ⨯ 110% = 388,357$536,303CMR = $536,303/$924,660 = 0.58The contribution margin ratio remains at 0.58.5. Additional variable expense = $840,600 ⨯ 0.03 = $25,218New contribution margin = $487,548 – $25,218 = $462,330New CM ratio = $462,330/$840,600 = 0.55Break-even point = $250,000/0.55 = $454,545The effect is to increase the break-even point.6. Present contribution margin $ 487,548Projected contribution margin ($920,600 ⨯ 0.55) 506,330Increase in contribution margin/profit $ 18,782Fitzgibbons should pay the commission because profit would increase by $18,782.1. Let X be a package of three Grade I cabinets and seven Grade II cabinets.Then:0.3X($3,400) + 0.7X($1,600) = $1,600,000X = 748 packagesGrade I: 0.3 ⨯ 748 = 224 unitsGrade II: 0.7 ⨯ 748 = 524 units2. P roduct P –V = P – V ⨯Mix = Total CMGrade I $3,400 $2,686 $714 3 $2,142 Grade II 1,600 1,328 272 7 1,904 Package $4,046 Direct fixed costs—Grade I $ 95,000Direct fixed costs—Grade II 95,000Common fixed costs 35,000Total fixed costs $ 225,000$225,000/$4,046 = 56 packagesGrade I: 3 ⨯ 56 = 168; Grade II: 7 ⨯ 56 = 3923. P roduct P –V = P – V ⨯Mix = Total CMGrade I $3,400 $2,444 $956 3 $2,868 Grade II 1,600 1,208 392 7 2,744 Package $5,612 P ackage CM = 3($3,400) + 7($1,600)P ackage CM = $21,400$21,400X = $1,600,000 – $600,000X = 47 packages remaining141 Grade I (3 ⨯ 47) and 329 Grade II (7 ⨯ 47)Additional contribution margin:141($956 – $714) + 329($392 – $272) $73,602Increase in fixed costs 44,000Increase in operating income $29,602Break-even: ($225,000 + $44,000)/$5,612 = 48 packages144 Grade I (3 ⨯ 48) and 336 Grade II (7 ⨯ 48)If the new break-even point is interpreted as a revised break-even for 2004, then total fixed costs must be reduced by the contribution margin already earned (through the first five months) to obtain the units that must be sold for the last seven months. These units would then be added to those sold during the first five months:CM earned = $600,000 – (83* ⨯ $2,686) – (195* ⨯ $1,328) = $118,102*224 – 141 = 83; 524 – 329 = 195X = ($225,000 + $44,000 – $118,102)/$5,612 = 27 packagesFrom the first five months, 28 packages were sold (83/3 or 195/7). Thus, the revised break-even point is 55 packages (27 + 28)—in units, 165 of Grade I and 385 of Grade II.。
10宏观经济学英文版(多恩布什)课后习题答案全解
CHAPTER 10MONEY, INTEREST, AND INCOMEAnswers to Problems in the Textbook:Conceptual Problems:1. The model in Chapter 9 assumed that both the price level and the interest rate were fixed. But the IS-LM model lets the interest rate fluctuate and determines the combination of output demanded and the interest rate for a fixed price level. It should be noted that while the upward-sloping AD-curve in Chapter 9 (the [C+I+G+NX]-line in the Keynesian cross diagram) assumed that interest rates and prices were fixed, the downward-sloping AD-curve that is derived at the end of Chapter 10 from the IS-LM model lets the price level fluctuate and describes all combinations of the price level and the level of output demanded at which the goods and money sector simultaneously are in equilibrium. 2.a. If the expenditure multiplier (α) becomes larger, the increase in equilibrium income caused by a unitchange in intended spending also becomes larger. Assume investment spending increases due to a change in the interest rate. If the multiplier α becomes larger, any increase in spending will cause a larger increase in equilibrium income. This means that the IS-curve will become flatter as the size of the expenditure multiplier becomes larger.If aggregate demand becomes more sensitive to interest rates, any change in the interest rate causes the [C+I+G+NX]-line to shift up by a larger amount and, given a certain size of the expenditure multiplier α, this will increase equilibrium income by a larger amount. As a result, the IS-curve will become flatter.2.b. Monetary policy changes affect interest rates and this leads to a change in intended spending, whichis reflected in a change in income. In 2.a. it was explained that a steep IS-curve means either that the multiplier α is small or that desired spending is not very interest sensitive. Therefore, an increase in money supply will reduce interest rates. However, this does not result in a large increase in aggregate demand if spending is very interest insensitive. Similarly, if the multiplier is small, then any change in spending will not affect output significantly. Therefore, the steeper the IS-curve, the weaker the effect of monetary policy changes on equilibrium output.3. Assume that money supply is fixed. Any increase in income will increase money demand and theresulting excess demand for money will drive the interest rate up. This, in turn, will reduce the quantity of money balances demanded to bring the money sector back to equilibrium. But if money demand is very interest insensitive, then a larger increase in the interest rate is needed to reach a new equilibrium in the money sector. As a result, the LM-curve becomes steeper.Along the LM-curve, an increase in the interest rate is always associated with an increase in income. This means that an increase in money demand (due to an increase in income) has to be offset by a decrease in the quantity of money demanded (due to an increase in the interest rate) to keep the money sector in equilibrium. But if money demand becomes more income sensitive, a smaller change in income is required for any specific change in the interest rate to keep the money sector in equilibrium. Therefore, the LM-curve becomes steeper as money demand becomes more income sensitive.4.a. A horizontal LM-curve implies that the public is willing to hold whatever money is supplied at anygiven interest rate. Therefore, changes in income will not affect the equilibrium interest rate in the money sector. But if the interest rate is fixed, we are back to the analysis of the simple Keynesian model used in Chapter 9. In other words, there is no offsetting effect (or crowding-out effect) to fiscal policy.14.b. A horizontal LM-curve implies that changes in income do not affect interest rates in the money sector.Therefore, if expansionary fiscal policy is implemented, the IS-curve shifts to the right, but the level of investment spending is no longer negatively affected by rising interest rates, that is, there is no crowding-out effect. In terms of Figure 10-3, the interest rate not longer serves as the link between the goods and assets markets.4.c. A horizontal LM-curve results if the public is willing to hold whatever money balances are suppliedat a given interest rate. This situation is called the liquidity trap. Similarly, if the Fed is prepared to peg the interest rate at a certain level, then any change in income will be accompanied by an appropriate change in money supply. This will lead to continuous shifts in the LM-curve, which is equivalent to having a horizontal LM-curve, since the interest rate will never change.5. From the material presented in the text we know that when intended spending becomes more interestsensitive, then the IS-curve becomes flatter. Now assume that an increase in the interest rate stimulates saving and therefore reduces the level of consumption. This means that now not only investment spending but also consumption is negatively affected by an increase in the interest rate. In other words, the [C+I+G+NX]-line in the Keynesian cross diagram will now shift down further than previously and the level of equilibrium income will decrease more than before. In other words, the IS-curve has become flatter.This can also be shown algebraically, since we can now write the consumption function as follows:C = C* + cYD - giIn a simple model of the expenditure sector without income taxes, the equation for aggregate demand will now beAD = A o + cY - (b + g)i.From Y = AD ==> Y = [1/(1 - c)][A o - (b + g)i] ==>i = [1/(b + g)]A o - [(1 - c)/(b + g)]YTherefore, the slope of the IS-curve has been reduced from (1 - c)/b to (1 - c)/(b + g).6. In the IS-LM model, a simultaneous decline in interest rates and income can only be caused by a shiftof the IS-curve to the left. This shift in the IS-curve could have been caused by a decrease in private spending due to negative business expectations or a decline in consumer confidence. In 1991, the economy was in a recession and firms did not want to invest in new machinery and, since consumer confidence was very low, people were not expected to increase their level of spending. In the IS-LM diagram the adjustment process can be described as follows:I o↓ ==> Y ↓ (the IS-curve shifts left) ==> m d↓ ==> i ↓ ==> I ↑ ==> Y ↑. Effect: Y ↓ and i ↓ .2ii1i221Technical Problems:1.a. Each point on the IS-curve represents an equilibrium in the expenditure sector. Therefore the IS-curvecan be derived by settingY = C + I + G = (0.8)[1 - (0.25)]Y + 900 - 50i + 800 = 1,700 + (0.6)Y - 50i ==>(0.4)Y = 1,700 - 50i ==> Y = (2.5)(1,700 - 50i) ==> Y = 4,250 - 125i.1.b. The IS-curve shows all combinations of the interest rate and the level of output such that theexpenditure sector (the goods market) is in equilibrium, that is, intended spending is equal to actual output. A decrease in the interest rate stimulates investment spending, making intended spending greater than actual output. The resulting unintended inventory decrease leads firms to increase their production to the point where actual output is again equal to intended spending. This means that the IS-curve is downward sloping.1.c. Each point on the LM-curve represents an equilibrium in the money sector. Therefore the LM-curvecan be derived by setting real money supply equal to real money demand, that is,M/P = L ==> 500 = (0.25)Y - 62.5i ==> Y = 4(500 + 62.5i) ==> Y = 2,000 + 250i.1.d. The LM-curve shows all combinations of the interest rate and level of output such that the moneysector is in equilibrium, that is, the demand for real money balances is equal to the supply of real money balances. An increase in income will increase the demand for real money balances. Given a fixed real money supply, this will lead to an increase in interest rates, which will then reduce the quantity of real money balances demanded until the money market clears. In other words, the LM-curve is upward sloping.1.e. The level of income (Y) and the interest rate (i) at the equilibrium are determined by the intersectionof the IS-curve with the LM-curve. At this point, the expenditure sector and the money sector are both in equilibrium simultaneously.From IS = LM ==> 4,250 - 125i = 2,000 + 250i ==> 2,250 = 375I ==> i = 6==> Y = 4,250 - 125*6 = 4,250 - 750 ==> Y = 3,500Check: Y = 2,000 + 250*6 = 2,000 + 1,500 = 3,5003i125 ISLM62,000 3,500 4,250 Y2.a. As we have seen in 1.a., the value of the expenditure multiplier is α= 2.5. This multiplier αisderived in the same way as in Chapter 9. But now intended spending also depends on the interest rate, so we no longer have Y = αA o, but ratherY = α(A o - bi) = (1/[1 - c + ct])(A o - bi) ==> Y = (2.5)(1,700 - 50i) = 4,250 - 125i.2.b.This can be answered most easily with a numerical example. Assume that government purchasesincrease by ∆G = 300. The IS-curve shifts parallel to the right by==> ∆IS = (2.5)(300) = 750.Therefore IS': Y = 5,000 - 125iFrom IS' = LM ==> 5,000 - 125i = 2,000 + 250i ==> 375i = 3,000 ==> i = 8==> Y = 2,000 + 250*8 ==> Y = 4,000 ==> ∆Y = 500When interest rates are assumed to be constant, the size of the multiplier is equal to α = 2.5, that is, (∆Y)/(∆G) = 750/300 = 2.5. But when interest rates are allowed to vary, the size of the multiplier is reduced to α1 = (∆Y)/(∆G) = 500/300 = 1.67.2.c. Since an increase in government purchases by ∆G = 300 causes a change in the interest rate of 2percentage points, government spending has to change by ∆G = 150 to increase the interest rate by 1 percentage point.2.d. The simple multiplier α in 2.a. shows the magnitude of the horizontal shift in the IS-curve, given achange in autonomous spending by one unit. But an increase in income increases money demand and the interest rate. The increase in the interest rate crowds out some investment spending and this has a dampening effect on income. The multiplier effect in 2.b. is therefore smaller than the multiplier effect in 2.a.3.a. An increase in the income tax rate (t) will reduce the size of the expenditure multiplier (α). But as themultiplier becomes smaller, the IS-curve becomes steeper. As we can see from the equation for the IS-curve, this is not a parallel shift but rather a rotation around the vertical intercept.Y = α(A o - bi) = [1/(1 - c + ct)](A o - bi) ==> i = (1/b)A o - (α/b)Y = (1/b)A o - (1/b)[1 - c + ct]Y 3.b. If the IS-curve shifts to the left and becomes steeper, the equilibrium income level will decrease. Ahigher tax rate reduces private spending and this will lower national income.3.c. When the income tax rate is increased, the equilibrium interest rate will also decrease. The adjustmentto the new equilibrium can be expressed as follows (see graph on the next page):t up ==> C down ==> Y down ==> m d down ==> i down ==> I up ==> Y up. Effect: Y ↓ and i ↓45i 1i 2214.a. If money demand is less interest sensitive, then the LM-curve is steeper and monetary policy changesaffect equilibrium income to a larger degree. If money supply is assumed to be fixed, the adjustment to a new equilibrium in the money sector has to come solely through changes in money demand. If money demand is less interest sensitive, any increase in money supply requires a larger increase in income and a larger decrease in the interest rate in order to bring the money sector into a new equilibrium.i ii 1 i 1 2 2i 20 120 12The adjustment process in each of the two diagrams is the same; however, in the case of a more interest-sensitive money demand (a flatter LM-curve), the change in Y and i will be smaller.(M/P) up ==> i down ==> I up ==> Y up ==> m d up ==> i up Effect: Y ↑ and i ↓Section 10-5 derives the equation for the LM-curve and the equation for the monetary policy multiplier asi = (1/h)[kY - (M/P)] and (∆Y)/∆(M/P) = (b/h)γrespectively. If money demand becomes more interest sensitive, the value of h becomes larger and the slope of the LM-curve becomes flatter, while the size of the monetary policy multiplier becomes smaller.4.b. An increase in money supply drives interest rates down. This decrease in interest rates will stimulateintended spending and thus income. If money demand becomes less interest sensitive, a larger increase in income is required to bring the money sector into equilibrium. But this implies that the overall decrease in the interest rate has to be larger, given that the interest sensitivity of spending has not changed.5. The price adjustment, that is, the movement along the AD-curve, can be explained in the followingway: With nominal money supply (M) fixed, real money balances (M/P) will decrease as the price level (P) increases. There is an excess demand for money and interest rates will rise. This will lead toa decrease in investment spending and thus the level of output demanded will decrease. In otherwords, the LM-curve will shift to the left as real money balances decrease.6. In the classical case, the AS-curve is vertical. Therefore, any increase in aggregate demand due toexpansionary monetary policy will, in the long run, not lead to any increase in output but simply lead to an increase in the price level. An increase in money supply will first shift the LM-curve to the right.This implies a shift of the AD-curve to the right. Therefore we have excess demand for goods and services and prices will begin to rise. But as the price level rises, real money balances will begin to fall again, eventually returning to their original level. Therefore, the shift of the LM-curve to the right due to the expansionary monetary policy and the resulting shift of the AD-curve will be exactly offset by a shift of the LM-curve to the left and a movement along the AD-curve to the new long-run equilibrium due to the price adjustment. At this new long-run equilibrium, the level of output and interest rates will not have changed while the price level will have changed proportionally to the nominal money supply, leaving real money balances unchanged. In other words, money is neutral in the long run (the classical case).7.a. An increase in the demand for money will shift the LM-curve to the left, raising the interest rate andlowering the level of output demanded. As a result, the AD-curve will also shift to the left. In the Keynesian case, the price level is assumed to be fixed, that is, the AS-curve is horizontal. In this case, the decrease in income in the AD-AS diagram is equivalent to the decrease in income in the IS-LM diagram, since there is no price adjustment, that is, the real balance effect does not come into play. 7.b. An increase in the demand for money will shift the LM-curve to the left, raising the interest rate andlowering the level of output demanded. As a result, the AD-curve will also shift to the left. In the classical case, the level of output will not change, since the AS-curve is vertical. In this case, the shift in the AD-curve will simply be reflected in a price decrease, but the level of output will remain unchanged. The real balance effect causes the LM-curve to shift back to its original level, since the price decrease causes an increase in real money balances.Additional Problems:1. True or false? Explain your answer.“A decrease in the marginal propensity to save implies tha t the IS-curve will become steeper.”False A decrease in the marginal propensity to save (s = 1 - c) is equivalent to an increase in the marginal propensity to consume (c), which, in turn, implies an increase in the expenditure multiplier ( ). But with a larger expenditure multiplier, any increase in investment spending due to a decrease in the interest rate will lead to a larger increase in income. Therefore the IS-curve will become flatter and not steeper.2. True or false? Explain your answer.“If the c entral bank keeps the supply of money constant, then the money supply curve is vertical, which implies a vertical LM-curve.”6False. Equilibrium in the money sector implies that real money supply is equal to real money demand, that is,m s = M/P = m d(i,Y).This implies that any increase in income (Y) will increase the demand for money. To bring the money sector back into equilibrium, interest rates (i) have to rise simultaneously to bring the quantity of money demanded back to the original level (equal to the fixed supply of money). Therefore, to keep the money sector in equilibrium, an increase in income must always be associated with an increase in the interest rate and the LM-curve must be upward sloping.3. "Restrictive monetary policy reduces consumption and investment." Comment on thisstatement.A reduction in money supply raises interest rates, which will, in turn, have a negative effect on the level of investment spending. The level of consumption may also decrease as it becomes more costly to finance expenditures by borrowing money. But even if it is assumed that consumption is not affected by changes in the interest rate, consumption will still decrease since restrictive monetary policy will reduce national income and therefore private spending.4. "If government spending is increased, money demand will increase." Comment.A change in government spending directly affects the expenditure sector and therefore the IS-curve. But in an IS-LM framework, the money sector is also affected indirectly. An increase in the level of government spending will shift the IS-curve to the right, leading to an increase in income. But the increase in income will lead to an increase in money demand, so the interest rate will have to increase in order to lower the quantity of money demanded and to bring the money sector back into equilibrium. Overall no change in money demand can occur, since equilibrium in the money sector requires that m s = M/P = m d, that is, money supply has to be equal to money demand, and money supply is assumed to be fixed.5. "An increase in autonomous investment reduces the interest rate and therefore the moneysector will no longer be in equilibrium." Comment on this statement.An increase in autonomous investment shifts the IS-curve to the right. The increase in income leads to an increase in the demand for money, which means that interest rates increase. The increase in interest rates then reduces the quantity of money demanded again to bring the money market back to equilibrium.6. "A monetary expansion leaves the budget surplus unaffected." Comment on this statement. Expansionary monetary policy, that is, an increase in money supply, will lower interest rates (the LM-curve will shift to the right). Lower interest rates will lead to an increase in investment spending and the economy will therefore be stimulated. But a higher level of national income increases the government’s tax revenues and therefore the budget surplus will increase.7. "Restrictive monetary policy implies lower tax revenues and therefore to an increase in thebudget deficit." Comment on this statement.A decrease in money supply will shift the LM-curve to the left. This will lead to an increase in the interest rate, which will lead to a reduction in spending and thus national income. But as income decreases, so does income tax revenue. Therefore, the budget deficit will increase because of the change in its cyclical component.78. “If the demand for money becomes more sensitive to changes in income, then the LM-curvebecome s flatter.” Comment on this statement.Along the LM-curve, an increase in the interest rate is always associated with an increase in income. This means that an increase in money demand (due to an increase in income) has to be offset by a decrease in the quantity of money demanded (due to an increase in the interest rate) to keep the money sector in equilibrium. But if money demand becomes more income sensitive, a smaller change in income is required for any specific change in the interest rate to keep the money sector in equilibrium. Therefore, the LM-curve becomes steeper (and not flatter) as money demand becomes more sensitive to changes in income.9. “A decrease in the income tax rate will increase the demand for money, shifting the LM-curveto the righ t.” Comment on this statement.A decrease in the income tax rate (t) will increase the expenditure multiplier (α). But with a larger expenditure multiplier, any increase in investment spending due to a decrease in the interest rate will lead to a larger increase in income. Since fiscal policy affects the expenditure sector, the IS-curve (not the LM-curve) will shift. The IS-curve will become flatter and shift to the right. This will lead to a new equilibrium at a higher level of income (Y) and a higher interest rate (i). But money supply is fixed and the LM-curve remains unaffected by fiscal policy. Therefore, at the new equilibrium (the intersection of the new IS-curve with the old LM-curve) the demand for money will not have changed, since the money sector has to be in an equilibrium at m s = m d(i,Y).10. “If the demand for money becomes more insensitive to changes in the interest rate, equilibriumin the money sector will have to be restored mostly through changes in income. This implies a flat LM-curve.” Comment on this statement.Any increase in income will increase money demand and this will drive the interest rate up. Therefore, the quantity of money balances demanded will decline again until the money sector is back in equilibrium. But if money demand is very interest insensitive, then a larger increase in the interest rate is needed to reach a new equilibrium in the money sector. This means that the LM-curve is steep and not flat.11. Assume the following IS-LM model:Expenditure Sector Money SectorSp = C + I + G + NX M = 700C = 100 + (4/5)YD P = 2YD = Y - TA m d = (1/3)Y + 200 - 10iTA = (1/4)YI = 300 - 20iG = 120NX = -20(a) Derive the equilibrium values of consumption (C) and money demand (m d).(b) How much of investment (I) will be crowded out if the government increases its purchasesby ∆G = 160 and nominal money supply (M) remains unchanged?(c) By how much will the equilibrium level of income (Y) and the interest rate (i) change, ifnominal money supply is also increased to M' = 1,100?a. Sp = 100 + (4/5)[Y - (1/4)Y] + 300 - 20i + 120 - 20 = 500 + (4/5)(3/4)Y – 20i = 500 + (3/5)Y - 20iFrom Y = Sp ==> Y = 500 + (3/5)Y - 20i ==> (2/5)Y = 500 - 20i==> Y = (2.5)(500 - 20i) ==> Y = 1,250 - 50i IS-curveFrom M/P = m d ==> 700/2 = (1/3)Y + 200 - 10i ==> (1/3)Y = 150 + 10i==> Y = 3(150 + 10i) ==> Y = 450 + 30i LM-curve89IS = LM ==> 1,250 - 50i = 450 + 30i ==> 800 = 80i ==> i = 10==> Y = 1,250 - 50*10 ==> Y = 750C = 100 + (4/5)(3/4)750 = 100 + (3/5)750 ==> C = 550m s = M/P = 700/2 = 350 = m dCheck: m d = (1/3)750 + 200 - 10*10 = 350i25 IS o LM o10450 750 1,250 Yb. ∆IS = (2.5)160 = 400 ==> IS' = 1,650 - 50iIS' = LM ==> 1,650 - 50i = 450 + 30i ==> 1,200 = 80i ==> i = 15==> Y = 1,650 - 50*15 ==> Y = 900Since ∆i = + 5 ==> ∆I = - 20*5 ==> ∆I = - 100Check: ∆ 331510450 750 900 1,250 1,650 Yc. From M'/P = m d ==> 1,100/2 = (1/3)Y + 200 - 20i==> (1/3)Y = 350 - 20i ==> Y = 3(350 - 20i) ==> Y = 1,050 + 30iIS 1 = LM 1 ==> 1,650 - 50i = 1,050 + 30i ==> 600 = 80i ==> i = 7.5==> Y = 1,650 - 50(7.5) = 1,275.==> ∆i = - 7.5 and ∆Y = 375 as compared to (b).i1107.512. Assume the money sector can be described by these equations: M/P = 400 and m d = (1/4)Y - 10i.In the expenditure sector only investment spending (I) is affected by the interest rate (i), and the equation of the IS-curve is: Y = 2,000 - 40i.(a) If the size of the expenditure multiplier is α= 2, show the effect of an increase ingovernment purchases by ∆G = 200 on income and the interest rate.(b) Can you determine how much of investment is crowded out as a result of this increase ingovernment spending?(c)If the money demand equation were changed to m d = (1/4)Y, how would your answers in (a)and (b) change?a. From M/P = m d ==> 400 = (1/4)Y - 10i ==> Y = 1,600 + 40i LM-curveFrom IS = LM ==> 2,000 - 40i = 1,600 + 40i ==> 80i = 400 ==> i = 5==> Y = 2,000 - 40*5 ==> Y = 1,800∆IS = 2*200 = 400 ==> IS' = 2,400 - 40iIS' = LM ==> 2,400 - 40i = 1,600 + 40i ==> 80i = 800 ==> i = 10==> Y = 1,600 + 40*10 ==> Y = 2,000Therefore ∆i = + 5 and ∆Y = + 200b.Since the size of the expenditure multiplier is α = 2 but income only goes up by αY = 200, the fiscalpolicy multiplier in the IS-LM model is α1= 1. But this means that the level of investment has been reduced by 100, that is, ∆I = -100. This can be seen by restating the IS-curve as follows:Y = 2,000 - 40i = Y = 2(1,000 - 20i)Since government purchases are changed by ∆G = 200 ==> Y = 2(1,200 - 20i), which means that the IS-curve shifts by ∆IS = 2*200 = 400. But the increase in income is actually only ∆Y = 200. This implies that investment changes by ∆I = -100. Investment is of the form I = I o– 20i; however, since the interest rate went up by ∆i = 5, investment changes by ∆I = - 20*5 = - 100.From ∆Y = α(∆Sp) ==> 200 = 2(∆Sp) ==> ∆Sp = 100But since ∆Sp =∆ G + ∆I ==> 100 = 200 + ∆I ==> ∆I = - 100c. If m d= (1/4)Y, then we have the classical case, that is, a vertical LM-curve. In this case, fiscalexpansion will not change income at all. This occurs since the increase in G will be offset by a decrease in I of equal magnitude due to an increase in the interest rate.(M/P) = m d ==> 400 = (1/4)Y ==> Y = 1,600 LM-curveIS = LM ==> 2,000 - 40i = 1,600 ==> 40i = 400 ==> i = 10 ==> Y = 1,600IS' = LM ==> 2,400 - 40i = 1,600 ==> 40i = 800==> i = 20 ==> Y = 1,600 ==> ∆I = - 2001013. Assume money demand (md) and money supply (ms) are defined as: md = (1/4)Y + 400 - 15iand ms = 600, and intended spending is of the form: Sp = C + I + G + NX = 400 + (3/4)Y - 10i.Calculate the equilibrium levels of Y and i, and indicate by how much the Fed would have to change money supply to keep interest rates constant if the government increased its spending by ∆G = 50. Show your solutions graphically and mathematically.ms = md ==> 600 = (1/4)Y + 400 - 15i ==> (1/4)Y = 200 + 15i==> Y = 4(200 + 15i) ==> Y = 800 + 60i LM-curveY = C + I + G + NX ==> Y = 400 + (3/4)Y - 10i ==>(1/4)Y = 400 - 10i ==> Y = 4(400 - 10i) ==> Y = 1,600 - 40i IS-curveFrom IS = LM ==> 1,600 - 40i = 800 + 60i ==> 100i = 800 ==> i = 8 ==> Y = 1,280If government spending is increased by ∆G = 50, the IS-curve will shift to the right) by (∆IS) = 4*50 = 200. If the Fed wants to keep the interest rate constant, money supply has to be increased in a way that shifts the LM-curve to the right by exactly the same amount as the IS-curve, that is, (∆LM) = 200.From Y = 2(200 + 15i) ==> (∆Y) = 2(∆ms) ==> 200 = 2(∆ms)==> (∆ms) = 100, so money supply has to be increased by 100.Check: IS' = LM": 1,800 - 40i = 1,000 + 60i ==> 800 = 100i4018800 1000 1280 1480 1600 1800 Y14. Assume the equation for the IS-curve is Y = 1,200 – 40i, and the equation for the LM-curve isY = 400 + 40i.(a) Determine the equilibrium value of Y and i.(b) If this is a simple model without income taxes, by how much will these values change if thegovernment increases its expenditures by ∆G = 400, financed by an equal increase in lump sum taxes (∆TA o = 400)?a. From IS = LM ==> 1,200 - 40i = 400 + 40i ==>800 = 80i ==> i = 10 ==> Y = 400 + 40*10 ==> Y = 800b. According to the balanced budget theorem, the IS-curve will shift horizontally by the increase ingovernment purchases, that is, ∆IS = ∆G = ∆TA o = 400.Thus the new IS-curve is of the form: Y = 1,600 - 40i.From IS' = LM ==> 1,600 - 40i = 400 + 40i ==>1,200 = 80i ==> i = 15 ==> Y = 400 + 40*15 ==> Y = 1,00015. Assume you have the following information about a macro model:Expenditure sector: Money sector:11。
国际财务管理(英文版)课后习题答案6
CHAPTER 5 THE MARKET FOR FOREIGN EXCHANGESUGGESTED ANSWERS AND SOLUTIONS TO END-OF—CHAPTERQUESTIONS AND PROBLEMSQUESTIONS1。
Give a full definition of the market for foreign exchange。
Answer: Broadly defined，the foreign exchange (FX）market encompasses the conversion of purchasing power from one currency into another，bank deposits of foreign currency, the extension of credit denominated in a foreign currency，foreign trade financing，and trading in foreign currency options and futures contracts.2。
What is the difference between the retail or client market and the wholesale or interbank market for foreign exchange?Answer：The market for foreign exchange can be viewed as a two-tier market. One tier is the wholesale or interbank market and the other tier is the retail or client market。
International banks provide the core of the FX market. They stand willing to buy or sell foreign currency for their own account。
国际财务管理（英文版）课后习题答案7
国际财务管理（英⽂版）课后习题答案7CHAPTER 6 INTERNATIONAL PARITY RELATIONSHIPSSUGGESTED ANSWERS AND SOLUTIONS TO END-OF-CHAPTERQUESTIONS AND PROBLEMSQUESTIONS1. Give a full definition of arbitrage.Answer:Arbitrage can be defined as the act of simultaneously buying and selling the same or equivalent assets or commodities for the purpose of making certain, guaranteed profits.2. Discuss the implications of the interest rate parity for the exchange rate determination.Answer: Assuming that the forward exchange rate is roughly an unbiased predictor of the future spot rate, IRP can be written as:S = [(1 + I￡)/(1 + I$)]E[S t+1 I t].The exchange rate is thus determined by the relative interest rates, and the expected future spot rate, conditional on all the available information, I t, as of the present time. One thus can say that expectation is self-fulfilling. Since the information set will be continuously updated as news hit the market, the exchange rate will exhibit a highly dynamic, random behavior.3. Explain the conditions under which the forward exchange rate will be an unbiased predictor of the future spot exchange rate.Answer: The forward exchange rate will be an unbiased predictor of the future spot rate if (I) the risk premium is insignificant and (ii) foreign exchange markets are informationally efficient.4. Explain the purchasing power parity, both the absolute and relative versions. What causes the deviations from the purchasing power parity?Answer: The absolute version of purchasing power parity (PPP):S = P$/P￡.The relative version is:e = π$ - π￡.PPP can be violated if there are barriers to international trade or if people in different countries have different consumption taste. PPP is the law of one price applied to a standard consumption basket.5. Discuss the implications of the deviations from the purchasing power parity for countries’ competitive positions in the world market.Answer: If exchange rate changes satisfy PPP, competitive positions of countries will remain unaffected following exchange rate changes. Otherwise, exchange rate changes will affect relative competitiveness of countries. If a country’s currency appreciates (depreciates) by more than is warranted by PPP, that will hurt (strengthen) the country’s competitive position in the world market.6. Explain and derive the international Fisher effect.Answer: The international Fisher effect can be obtained by combining the Fisher effect and the relative version of PPP in its expectational form. Specifically, the Fisher effect holds thatE(π$) = I$ - ρ$,E(π￡) = I￡ - ρ￡.Assuming that the real interest rate is the same between the two countries, i.e., ρ$ = ρ￡, and substituting the above results into the PPP, i.e., E(e) = E(π$)- E(π￡), we obtain the international Fisher effect: E(e) = I$ - I￡.7. Researchers found that it is very difficult to forecast the future exchange rates more accurately than the forward exchangerate or the current spot exchange rate. How would you interpret this finding?Answer: This implies that exchange markets are informationally efficient. Thus, unless one has private information that is not yet reflected in the current market rates, it would be difficult to beat the market.8. Explain the random walk model for exchange rate forecasting. Can it be consistent with the technical analysis?Answer: The random walk model predicts that the current exchange rate will be the best predictor of the future exchange rate. An implication of the model is that past history of the exchange rate is of no value in predicting future exchange rate. The model thus is inconsistent with the technical analysis which tries to utilize past history in predicting the future exchange rate.*9. Derive and explain the monetary approach to exchange rate determination.Answer: The monetary approach is associated with the Chicago School of Economics. It is based on two tenets: purchasing power parity and the quantity theory of money. Combing these two theories allows for stating, say, the $/￡ spot exchange rate as:S($/￡) = (M$/M￡)(V$/V￡)(y￡/y$),where M denotes the money supply, V the velocity of money, and y the national aggregate output. The theory holds that what matters in exchange rate determination are:1. The relative money supply,2. The relative velocities of monies, and3. The relative national outputs.10. CFA question: 1997, Level 3.A.Explain the following three concepts of purchasing power parity (PPP):a. The law of one price.b. Absolute PPP.c. Relative PPP.B.Evaluate the usefulness of relative PPP in predicting movements in foreign exchange rates on:a.Short-term basis (for example, three months)b.Long-term basis (for example, six years)Answer:A. a. The law of one price (LOP) refers to the international arbitrage condition for the standardconsumption basket. LOP requires that the consumption basket should be selling for the same price ina given currency across countries.A. b. Absolute PPP holds that the price level in a country is equal to the price level in another countrytimes the exchange rate between the two countries.A. c. Relative PPP holds that the rate of exchange rate change between a pair of countries is aboutequalto the difference in inflation rates of the two countries.B. a. PPP is not useful for predicting exchange rates on the short-term basis mainly becauseinternational commodity arbitrage is a time-consuming process.B. b. PPP is useful for predicting exchange rates on the long-term basis.PROBLEMS1. Suppose that the treasurer of IBM has an extra cash reserve of $100,000,000 to invest for six months. The six-month interest rate is 8 percent per annum in the United States and 6 percent per annum in Germany. Currently, the spot exchange rate is €1.01 per dollar and the six-month forward exchange rate is €0.99 per dollar. The treasurer of IBM does not wish to bear any exchange risk. Where should he/she invest to maximize the return?The market conditions are summarized as follows:I$ = 4%; i€= 3.5%; S = €1.01/$; F = €0.99/$.If $100,000,000 is invested in the U.S., the maturity value in six months will be$104,000,000 = $100,000,000 (1 + .04).Alternatively, $100,000,000 can be converted into euros and invested at the German interest rate, with the euro maturity value sold forward. In this case the dollar maturity value will be$105,590,909 = ($100,000,000 x 1.01)(1 + .035)(1/0.99)Clearly, it is better to invest $100,000,000 in Germany with exchange risk hedging.2. While you were visiting London, you purchased a Jaguar for ￡35,000, payable in three months. You have enough cash at your bank in New York City, which pays 0.35% interest per month, compounding monthly, to pay for the car. Currently, the spot exchange rate is $1.45/￡and the three-month forward exchange rate is $1.40/￡. In London, the money market interest rate is 2.0% for a three-month investment. There are two alternative ways of paying for your Jaguar.(a) Keep the funds at your bank in the U.S. and buy ￡35,000 forward.(b) Buy a certain pound amount spot today and invest the amount in the U.K. for three months so that the maturity value becomes equal to ￡35,000.Evaluate each payment method. Which method would you prefer? Why?Solution: The problem situation is summarized as follows:A/P = ￡35,000 payable in three monthsi NY = 0.35%/month, compounding monthlyi LD = 2.0% for three monthsS = $1.45/￡; F = $1.40/￡.Option a:When you buy ￡35,000 forward, you will need $49,000 in three months to fulfill the forward contract. The present value of $49,000 is computed as follows:$49,000/(1.0035)3 = $48,489.Thus, the cost of Jaguar as of today is $48,489.Option b:The present value of ￡35,000 is ￡34,314 = ￡35,000/(1.02). To buy ￡34,314 today, it will cost $49,755 = 34,314x1.45. Thus the cost of Jaguar as of today is $49,755.You should definitely choose to use “option a”, and save $1,266, which is the difference between $49,755 and $48489.3. Currently, the spot exchange rate is $1.50/￡ and the three-month forward exchange rate is $1.52/￡. The three-month interest rate is 8.0% per annum in the U.S. and 5.8% per annum in the U.K. Assume that you can borrow as much as$1,500,000 or ￡1,000,000.a. Determine whether the interest rate parity is currently holding.b. If the IRP is not holding, how would you carry out covered interest arbitrage? Show all the steps and determine the arbitrage profit.c. Explain how the IRP will be restored as a result of covered arbitrage activities.Solution: Let’s summarize the given data first:S = $1.5/￡; F = $1.52/￡; I$ = 2.0%; I￡ = 1.45%Credit = $1,500,000 or ￡1,000,000.a. (1+I$) = 1.02(1+I￡)(F/S) = (1.0145)(1.52/1.50) = 1.0280Thus, IRP is not holding exactly.b. (1) Borrow $1,500,000; repayment will be $1,530,000.(2) Buy ￡1,000,000 spot using $1,500,000.(3) Invest ￡1,000,000 at the pound interest rate of 1.45%;maturity value will be ￡1,014,500.(4) Sell ￡1,014,500 forward for $1,542,040Arbitrage profit will be $12,040c. Following the arbitrage transactions described above,The dollar interest rate will rise;The pound interest rate will fall;The spot exchange rate will rise;The forward exchange rate will fall.These adjustments will continue until IRP holds.4. Suppose that the current spot exchange rate is €0.80/$ and the three-month forward exchange rate is €0.7813/$. The three-month interest rate is5.6 percent per annum in the United States and 5.40 percent per annum in France. Assume that you can borrow up to $1,000,000 or €800,000.a. Show how to realize a certain profit via covered interest arbitrage, assuming that you want to realize profit in terms of U.S. dollars. Also determine the size of your arbitrage profit.b. Assume that you want to realize profit in terms of euros. Show the covered arbitrage process and determine the arbitrage profit in euros.Solution:a.(1+ i $) = 1.014 < (F/S) (1+ i € ) = 1.053. Thus, one has to borrow dollars and invest in euros tomake arbitrage profit.1.Borrow $1,000,000 and repay $1,014,000 in three months.2.Sell $1,000,000 spot for €1,060,000.3.Invest €1,060,000 at the euro interest rate of 1.35 % for three months and receive€1,074,310 atmaturity.4.Sell €1,074,310 forward for $1,053,245.Arbitrage profit = $1,053,245 - $1,014,000 = $39,245.b.Follow the first three steps above. But the last step, involving exchange risk hedging, will be5.Buy $1,014,000 forward for €1,034,280.Arbitrage profit = €1,074,310 - €1,034,280 = €40,0305. In the issue of October 23, 1999, the Economist reports that the interest rate per annum is 5.93% in the United States and 70.0% in Turkey. Why do you think the interest rate is so high in Turkey? Based on the reported interest rates, how would you predict the change of the exchange rate between the U.S. dollarand the Turkish lira?Solution: A high Turkish interest rate must reflect a high expected inflation in Turkey. According to international Fisher effect (IFE), we haveE(e) = i$ - i Lira= 5.93% - 70.0% = -64.07%The Turkish lira thus is expected to depreciate against the U.S. dollar by about 64%.6. As of November 1, 1999, the exchange rate between the Brazilian real and U.S. dollar is R$1.95/$. The consensus forecast for the U.S. and Brazil inflation rates for the next 1-year period is 2.6% and 20.0%, respectively. How would you forecast the exchange rate to be at around November 1, 2000?Solution: Since the inflation rate is quite high in Brazil, we may use the purchasing power parity to forecast the exchange rate.E(e) = E(π$) - E(πR$)= 2.6% - 20.0%= -17.4%E(S T) = S o(1 + E(e))= (R$1.95/$) (1 + 0.174)= R$2.29/$7. (CFA question) Omni Advisors, an international pension fund manager, uses the concepts of purchasing power parity (PPP) and the International Fisher Effect (IFE) to forecast spot exchange rates. Omni gathers the financial information as follows:Base price level 100Current U.S. price level 105Current South African price level 111Base rand spot exchange rate $0.175Current rand spot exchange rate $0.158Expected annual U.S. inflation 7%Expected annual South African inflation 5%Expected U.S. one-year interest rate 10%Expected South African one-year interest rate 8%Calculate the following exchange rates (ZAR and USD refer to the South African and U.S. dollar, respectively).a. The current ZAR spot rate in USD that would have been forecast by PPP.b. Using the IFE, the expected ZAR spot rate in USD one year from now.c. Using PPP, the expected ZAR spot rate in USD four years from now.a. ZAR spot rate under PPP = [1.05/1.11](0.175) = $0.1655/rand.b. Expected ZAR spot rate = [1.10/1.08] (0.158) = $0.1609/rand.c. Expected ZAR under PPP = [(1.07)4/(1.05)4] (0.158) = $0.1704/rand.8. Suppose that the current spot exchange rate is €1.50/? and the one-year forward exchange rate is €1.60/?. The one-year interest rate is 5.4% in euros and 5.2% in pounds. You can borrow at most €1,000,000 or the equivalent pound amount, i.e., ? 666,667, at the current spot exchange rate.a.Show how you can realize a guaranteed profit from covered interest arbitrage. Assume that you are aeuro-based investor. Also determine the size of the arbitrage profit.b.Discuss how the interest rate parity may be restored as a result of the abovetransactions.c.Suppose you are a pound-based investor. Show the covered arbitrage process anddetermine the pound profit amount.Solution:a. First, note that (1+i €) = 1.054 is less than (F/S)(1+i €) = (1.60/1.50)(1.052) = 1.1221.You should thus borrow in euros and lend in pounds.1)Borrow €1,000,000 and promise to repay €1,054,000 in one year.2)Buy ?666,667 spot for €1,000,000.3)Invest ?666,667 at the pound interest rate of 5.2%; the maturity value will be ?701,334.4)To hedge exchange risk, sell the maturity value ?701,334 forward in exchange for €1,122,134.The arbitrage profit will be the difference between €1,122,134 and €1,054,000, i.e., €68,134.b. As a result of the above arbitrage transactions, the euro interest rate will rise, the poundinterest rate will fall. In addition, the spot exchange rate (euros per pound) will rise and the forward rate will fall. These adjustments will continue until the interest rate parity is restored.c. The pound-based investor will carry out the same transactions 1), 2), and 3) in a. But to hedge, he/she will buy €1,054,000 forward in exchange for ?658,750. The arbitrage profit will then be ?42,584 = ?701,334 - ?658,750.9. Due to the integrated nature of their capital markets, investors in both the U.S. and U.K. require the same real interest rate, 2.5%, on their lending. There is a consensus in capital markets that the annual inflation rate is likely to be 3.5% in the U.S. and 1.5% in the U.K. for the next three years. The spot exchange rate is currently $1.50/￡./doc/595318ce05087632311212e1.html pute the nominal interest rate per annum in both the U.S. and U.K., assuming that the Fishereffect holds.b.What is your expected future spot dollar-pound exchange rate in three years from now?c.Can you infer the forward dollar-pound exchange rate for one-year maturity?Solution.a. Nominal rate in US = (1+ρ) (1+E(π$)) – 1 = (1.025)(1.035) – 1 = 0.0609 or 6.09%.Nominal rate in UK= (1+ρ) (1+E(π?)) – 1 = (1.025)(1.015) – 1 = 0.0404 or 4.04%.b. E(S T) = [(1.0609)3/(1.0404)3] (1.50) = $1.5904/?.c. F = [1.0609/1.0404](1.50) = $1.5296/?.Mini Case: Turkish Lira and the Purchasing Power ParityVeritas Emerging Market Fund specializes in investing in emerging stock markets of the world. Mr. Henry Mobaus, an experienced hand in international investment and your boss, is currently interested in Turkish stock markets. He thinks that Turkey will eventually be invited to negotiate its membership in the European Union. If this happens, it will boost the stock prices in Turkey. But, at the same time, he is quite concerned with the volatile exchange rates of the Turkish currency. He would like to understand what drives the Turkish exchange rates. Since the inflation rate is much higher in Turkey than in the U.S., he thinks that the purchasing power parity may be holding at least to some extent. As a research assistant for him, you were assigned to check this out. In other words, you have to study and prepare a report on the following question: Does the purchasing power parity hold for the Turkish lira-U.S. dollar exchange rate? Among other things, Mr. Mobaus would like you to do the following:Plot the past exchange rate changes against the differential inflation rates betweenTurkey and the U.S. for the last four years.Regress the rate of exchange rate changes on the inflation rate differential to estimatethe intercept and the slope coefficient, and interpret the regression results.Data source: You may download the consumer price index data for the U.S. and Turkey from the following website:/doc/595318ce05087632311212e1.html /home/0,2987,en_2649_201185_1_1_1_1_1,00.html, “hot file”(Excel format) . You may download the exchange rate data from the website:/doc/595318ce05087632311212e1.html merce.ubc.ca/xr/data.html.Solution:a. In the current solution, we use the monthly data from January 1999 – December 2002.b. We regress exchange rate changes (e) on the inflation rate differential and estimate the intercept (α ) and slope coefficient (β):3.095) (t 1.472β?0.649)- (t 0.011αε Inf_US) -Inf_Turkey (β?αe t t ===-=++=The estimated intercept is insignificantly different from zero, whereas the slope coefficient is positive and significantly different from zero. In fact, the slope coefficient is insignificantly different from unity. [Note that t-statistics for β = 1 is 0.992 = (1.472 – 1)/0.476 where s.e. is 0.476] In other words, we cannot reject the hypothesis that the intercept is zero and the slope coefficient is one. The results are thus supportive of purchasing power parity.。
微波工程第三版英文版课后练习题含答案
微波工程第三版英文版课后练习题含答案1. IntroductionThis document contns the answers to the exercise questions at the end of each chapter in the third edition of Microwave Engineering by David M. Pozar. The questions are intended to help readers review and reinforce their understanding of the concepts and principles presented in the book.2. Chapter 1 Questions and AnswersQuestion 1.1What is the wavelength of a 1 GHz signal in free space?Answer:The speed of light in free space is approximately 3 x 10^8 m/s. Therefore, the wavelength of a 1 GHz signal is:λ = c / f = 3 x 10^8 / 1 x 10^9 = 0.3 metersQuestion 1.2What is an isotropic radiator?Answer:An isotropic radiator is an idealized antenna that radiates equally in all directions. It is often used as a reference for comparing the radiation patterns of other antennas.Question 1.3What is Friis transmission formula?Answer:Friis transmission formula is a formula used to calculate the power received by an antenna from a distant transmitting antenna, taking into account losses in the transmitted signal, the receiving antenna, and the medium between them. The formula is:Pr = Pt Gt Gr (λ / 4πd)^2where: - Pr is the received power - Pt is the transmitted power - Gt is the gn of the transmitting antenna - Gr is the gn of the receiving antenna - λ is the wavelength - d is the distance between the antennas Question 1.4What is a microwave circuit?Answer:A microwave circuit is a circuit that operates at microwave frequencies, which are typically considered to be in the range of 300 MHz to 300 GHz. These circuits can be used for a variety of purposes, including communication, radar, sensing, and others. Microwave circuits are typically made up of a combination of passive and active components, such as inductors, capacitors, resistors, transistors, and others.3. Chapter 2 Questions and AnswersQuestion 2.1What is a transmission line?Answer:A transmission line is a structure used to transfer electromagnetic energy from one point to another. It consists of two or more conductors separated by a dielectric, such as r, plastic, or ceramic. Transmission lines are used for a variety of purposes, including signal transmission, power transmission, and impedance matching.Question 2.2What is the characteristic impedance of a transmission line?Answer:The characteristic impedance of a transmission line is the ratio of the voltage and current wave amplitudes on the line. It is a property of the line itself and is independent of the load and source impedances. The characteristic impedance is determined by the line’s geometry and dielectric properties and is typically given in units of ohms.Question 2.3What is a standing wave?Answer:A standing wave is a wave that appears to be standing still, rather than traveling. It is formed when two waves with the same frequency and amplitude traveling in opposite directions on a transmission line interfere with each other. The resulting wave pattern has regions of maximum and minimum amplitudes, which appear to be standing still.Question 2.4What is a Smith chart?Answer:A Smith chart is a graphical tool used to analyze and design transmission lines and other microwave circuits. It is a polar plot of the reflection coefficient (or impedance) of a load as a function of frequency. Smith charts can be used to determine the input impedance ofa transmission line, the reflection coefficient of a load, and other important properties of microwave circuits. They are also used for impedance matching and tuning.4. ConclusionThe questions and answers presented in this document are intended to help readers review and reinforce their understanding of the conceptsand principles presented in the third edition of Microwave Engineeringby David M. Pozar. They cover a range of topics related to microwave circuits and transmission lines, and provide an opportunity for readers to test their knowledge and evaluate their understanding of the material.。
国际贸易实务英文版课后练习题含答案
国际贸易实务英文版课后练习题含答案Exercise 11.What is the difference between import and export? three commonly traded goods in international trade.3.What are trade barriers?4.List three advantages of international trade.5.What is the WTO and what is its purpose?Answers:1.Import refers to the purchase of goods or services fromanother country while export refers to the sale of goods orservices to another country.2.Examples of commonly traded goods in international tradeinclude oil, automobiles, and electronics.3.Trade barriers are government policies or regulations thatrestrict international trade, such as tariffs, quotas, andembargoes.4.Advantages of international trade include increased economicgrowth, access to a wider range of goods and services, andincreased competition which can lead to lower prices.5.The WTO, or World Trade Organization, is an internationalorganization that regulates and promotes international trade among member countries. Its purpose is to ensure that trade flowssmoothly, predictably, and freely as possible.Exercise 21.What is the difference between an open economy and a closedeconomy?2.What is a balance of trade? three factors that can influence a country’s balanceof trade.4.What is a trade deficit?5.What are the consequences of a trade deficit?Answers:1.An open economy is one that engages in international tradeand allows foreign investment while a closed economy is one that does not engage in international trade or allow foreign investment.2.Balance of trade refers to the difference between acountry’s exports and its imports during a specific time period.3.Factors that can influence a country’s balance of tradeinclude political stability, currency exchange rates, and trade policies such as tariffs and subsidies.4.A trade deficit occ urs when a country’s imports exceed itsexports.5.The consequences of a trade deficit can include a decreasein a country’s currency value, increased borrowing from foreign countries, and a loss of jobs in the domestic economy.Exercise 31.What is the difference between absolute advantage andcomparative advantage?2.Give an example of a country that has an absolute advantagein producing a specific good.3.What is the basis for comparative advantage?4.Expln the concept of opportunity cost and how it relates tocomparative advantage.5.How can a country benefit from specializing in theproduction of goods in which it has a comparative advantage? Answers:1.Absolute advantage exists when a country can produce a goodmore efficiently than another country while comparative advantage exists when a country can produce a good at a lower opportunity cost than another country.2.For example, Saudi Arabia has an absolute advantage inproducing oil due to its abundance of natural resources andadvanced technology.3.The basis for comparative advantage is the idea thatcountries should specialize in producing goods in which they havea lower opportunity cost compared to other goods.4.Opportunity cost refers to the value of the next bestalternative that is given up in order to pursue a particularaction. It relates to comparative advantage because a countryshould produce the goods in which it has a comparative advantage and trade for goods in which it does not have a comparativeadvantage.5.A country can benefit from specializing in the production ofgoods in which it has a comparative advantage by increasingefficiency and productivity, leading to lower costs and increased competitiveness in international trade.。
课后习题答案(英文版)
1.What are linear and branched polymers? Can thermoplastics be branched?A linear polymer consists of spaghetti-like molecular chains.In a branched polymer, there are primary polymer chains and secondary offshoots of smaller chains that stem from these main chains.2.Define(a) a thermoplastic, (b ) thermosetting plastics,(c) elastomers, and (d) thermoplastic elastomers.Thermoplastics are composed of long chains produced by joining together monomers; they typically behave in a plastic, ductile manner. The chains may or may not have branches. Thermosetting polymers are composed of long chains (linear or branched) of molecules that are strongly cross-linked to one another to form three-dimensional network structures. Elastomers These are known as rubbers. They have an elastic deformation >200%. The polymer chains consist of coil-like molecules that can reversibly stretch by applying a force. Thermoplastic elastomers are a special group of polymers. They have the processing ease of thermoplastics and the elastic behavior of elastomers3.What electrical and optical applications are polymers used for? Explain using examples.We use polymers in photochromic lenses.Plastics are often used to make electronic components because of their insulating ability and low dielectric constant.More recently, significant developments have occurred in the area of flexible electronic devices based on the useful piezoelectricity, semiconductivity, optical and electro-optical properties.4.What are the major advantages associated with plastics compared to ceramics, glasses, and metallic materials?Commercial polymers are lightweight, corrosion-resistant material with low strength and stiffness, and they are not suitable for use at high temperatures.These polymers are relatively inexpensive and are readily formed into a variety of shapes, ranging form plastic bags to mechanical gears to bathtubs.5.What do the terms condensation polymerization, addition polymerization, initiator mean ? Addition polymerization and condensation polymerization are the two main ways to conduct “polymerization”. The polymers derived from these processes are known as addition and condensation polymers, respectively.The formation of the most common polymer, polyethylene (PE), from ethylene molecules is an example of addition or chain-growth polymerization.Ethylene, a gas, is the monomer (single unit). The two carbon atoms are joined by a double covalent bond.Each carbon atom shares two of its electrons with the second carbon atom, and two hydrogen atoms are bonded to each of the carbon atoms.In presence of an appropriate combination of heat, pressure, and catalysts, the double bond between the carbon atoms is broken and replaced with a single covalent bond.The double bond is an unsaturated bond. After changing to a single bond, the carbon atoms arestill joined, but they become active;other repeat units or mers can be added to produce the polymer chain.initiator is a kind of chemical required in addition polymerization to initiate monomer to start polymerizing reaction.In condensation polymerization, a relatively small molecule (such as water, ethanol, methanol etc.) is formed as a result of the polymerization reaction.6.Explain why low-density polyethylene is good to make grocery bags, however, super high molecular weight polyethylene must be used where strength and very high wear resistance is needed.In general, for thermoplastics, the higher the average molecular weight the higher will be the melting temperature and the higher will be the Young’s modulus of the polymer.Degree of Polymerization in general, for a given type of thermoplastic (e.g., polyethylene) the tensile strength, creep resistance, impact toughness, wear resistance, and melting temperature all increase with increasing average molecular weight or degree of polymerization.7.The molecular weight of polymethyl methacrylate is250,000g/mol. If all of the polymer chains are the same length,(a ) calculate the degree of polymerization, and(b ) the number of chains in 1g of the polymerThe molecular weight of PMMA = ( ) g/mol.Therefore, the degree of polymerization is:250000/( ) = ( )MMA molecules per average chain8.Explain what the following terms mean:decomposition temperature,heat distortion temperature,glass temperature,and melting temperature.Why is it that thermoplastics do not have a fixed melting or glass temperature.At very high temperature, the covalent bonds between the atoms in the linear chain may be destroyed, and the polymer may burn or char.In thermoplastics decomposition occurs in the liquid state, in thermosets the decomposition occurs in the solid state.This temperature T d is the degradation (or decomposition) temperature.Heat distortion temperature under load, which is the temperature at which a given deformation of a beam occurs for a standard load.A high deflection temperature indicates good resistance tocreep.Glassy State Below the glass temperature Tg, the linearamorphous polymer becomes hard, brittle, and glass-like.This is again not a fixed temperature but a range oftemperatures.thermoplastics when cooled below the melting temperature,with the chains becoming closely aligned over appreciable distances.A sharp increase in the density occurs as the coiled and intertwined chains in the liquid arerearranged into a more orderly, close-packed structur9.How do the glass temperatures of polyethylene, polypropylene, and polymethylmethacrylate compare? Explain their differences, based on the structure of the monomer.10.What factors influence the crystallinity of polymers? Explain the development and role ofcrystallinity in PET and Nylon.11.For each of the following pairs, recommend the one that will most likely have the betterimpact properties at 25℃. Explain each of your choices.(a) polyethylene versus polystyrene,(b) low-density polyethylene versus high-density polyethylene, and(c) polymethyl methacrylate versus polytetrafluoroethylene.12.塑料名称聚酯高密度聚乙烯聚氯乙烯低密度聚乙烯聚丙烯聚苯乙烯其他塑料代码塑料代码01 02 03 04 05 06 07塑料缩写代号PET HDPE PVC LDPE PP PS Others。
中国文化简介(英文版)课后习题答案1
中国文化简介(英文版)课后习题答案1中国文化简介（英文版）课后习题答案1Chapter 1答案1. Multiple choice (choose the best answer).1) c 2) b 3) a 4) d 5) c2. Fill in the blanks.6) Sumerian, Egyptian, Chinese characters7) red, rectangular, five stars8) form, sound, meaning9) family name, the given name, xing, shi, ming, zi3. Translate the following terms into English.10) a. the Imperial palace/the Forbidden City b. nature reserve c. autonomousregion d. special administrative region11) a. the Han nationality b. ethical tradition c. social status d. Chinese character 4. Explain the following in English.12) paper making, printing, the compass and gunpowder.13) 甲骨文，钟鼎文，小篆，隶书，楷书5. Answer the following questions.14) Chinese characters mainly have four ways of formation, namely pictographs,indicatives, ideographs and pictophonetic.15) A person’s ming and zi were normally given by his or her elders. Hao wasdifferent from both ming and zi in that it was chosen by oneself rather than by others. A person often had more than one hao. Hao was not used to address one another but as a signature in one’s poetic and artistic works.Hao usually revealed one’s aspiratio ns and moral values.16) A Chinese surname is generally composed of one character or syllable, suchas Zhang, Wu, Li, or Yang. There are also two-syllable, three-syllable or even four-syllable surnames, such as Ouyang, Zhuge, Sima, Gongsun, Zhukehun, Buliugu, Houmochen and Jingjiangliushi.Chapter 2答案1．Multiple choice (choose the best answer).1) c 2) d 3) a 4) d 5) a2. Fill in the blanks.6) 221 B.C.7) Silk Road, Chang'an, Xinjiang, Mediterranean Sea8) Opium War9) Sun Yat-sen, feudal monarchical system3. Translate the following terms into English.10) a. the Paleolithic Era b. the Neolithic Age c. slave society d. Dream of RedMansions11) a. painted pottery b. the spring and Autumn Period c. socialist market economyd. Opium War4. Explain the following in English.12) During the reign of Emperor Wudi (Liu Che, r. 140-87 B.C.), the Han regimereached the period of its greatest prosperity: The emperor conquered the Xiongnu nomads, and sent Zhang Qian as envoy to the Western Regions (Central Asia), and in the process pioneered the route known as the "Silk Road" from the Han capital Chang'an (today's Xi'an, Shaanxi Province), through Xinjiang and onward, finally reaching the east coast of the Mediterranean Sea.13) During the Spring and Autumn and Warring States periods, philosophy andother branches of scholarship were unprecedentedly thriving, with the representatives of various schools vying with each other in writing books to discuss politics and analyze society. Hence the appearance of a situation in which "a hundred schools of thought contended."5. Answer the following questions.14) The Opium War was the turning point in Chinese history in that it markedthe close of the ancient period and the beginning of the modern history. 15) The reason why the construction of the Dujiang Dam was so important inChinese ancient times is that it made possible rationalized irrigation supply, flood diversion and sand discharge.16) During his reign, Qin Shi Huang standardized the script, currencies, andweights and measures, established the system of prefectures and counties, and constructed the world-renowned Great Wall as well as a large palace, mausoleum and temporary regal lodges respectively in Xianyang, Lishan and other places. In addition, the life-size terracotta horses and armored warriors excavated from sites near the mausoleum of Qin Shi Huang are known as the eighth wonder of the world.Chapter 3答案1．Multiple choice (choose the best answer).1) d 2) b 3) a 4) b 5) d2. Fill in the blanks.6) 3000, 727) li, yi, yi8) Mo Zi9) Xun Zi, nature, materialism, atheism3. Translate the following terms into English.10) a. Confucianism b. (Sun Wu’s) the Art of War c. Confucian analects d.Second Sage11) a. the feudal landlord class b. conservatism c. the policy of benevolence d. thenine-square field system4. Explain the following in English.12) The six documents (The Six Classics) under Confucius compilation includeShi (The Book of Songs), Shu (Collection of Ancient Texts), Li (The Rites), Yue(The Music), Yi (I Ching, or The Classic of Changes), and Chun Qiu (The Spring and Autumn Annuals), which are considered as the classics of Confucianism.13) Mencius believed that human beings are good by nature. He held that thisgoodness is innate and can be acquired without learning or thinking; one’s natural goodness is presented by the exercise of benevolence, righteousness, proprieties and prudence. Evil comes into being when one rejects their natural goodness.5. Answer the following questions.14) According to Mencius, the ideal moral personality is that one should never be“corrupted by neither riches nor honors, shaken by neither poverty nor adversity, faltered by neither threats nor force”.15) Han Feizi argued that human nature is basically selfish, and thus the socialorder can be maintained only when the ruler imposes rules and his subjects must obey without questioning and enforces them with strict punishments.As a moral and ethical system, “ren” is the central theme of Confucius Analects, which focuses on human love that is hierarchical and differentiated. Thus Confucius created his version of humanism. In his idea, human nature is partially good and partially evil. Based on “ren”, Confucius objected to the fantastic powers that confused the human spirit.16) As one of the greatest thinkers and educators in the history of China,Confucius’ contributions lie in the following three aspects. Firstly, he compiled and preserved literary works of three generations. The six documents (The Six Classics) under his compilation, including Shi (The Book of Songs), Shu (Collection of Ancient Texts), Li (The Rites), Yue (The Music), Yi (I Ching, or The Classic of Changes), and Chun Qiu (The Spring and Autumn Annuals), are considered as the classics of Confucianism.Secondly, Confucius established a system of philosophical thoughts with “ren”(benevolence) as its fundamental virtue.Thirdly, Confucius established private schools and founded a systematic educational framework.Chapter 4答案1．Multiple choice (choose the best answer).1) d 2) d 3) b 4) b 5) c2. Fill in the blanks.6) naturalistic, primitive7) the simplicity, true nature, selfishness, desire8) Old Master9) the social order, individual freedom3. Translate the following terms into English.10) a. prehistoric times b. pessimism c. Taoism d. men-cosmos correspondence11) a. Chinese martial arts b. astrology c. Chinese alchemy d. social order4. Explain the following in English.12) compassion, moderation, and humility13) Mount Longhu (Mount Dragon and Tiger) in Jiangxi Province, MountQingcheng in Sichuan Province, Mount Wudang in Hubei Province, and Mount Qiyun in Anhui Province.5. Answer the following questions.14) The core of Lao Zi’s thought is “Tao” (the Way), by which he refered to thecondition of the universe before the creation of the heaven and the earth.Therefore, it is from Tao that all the elements of the universe are derived.Reversal enables Tao to have a circular movement, that is, when the development of anything brings it to one extreme, a reversal to the other extreme takes place.15) Taoism is one of the most important religions in China, which refersto a variety of related philosophical and religious traditions and concepts. These traditions have influenced East Asia for over two thousand years and some have spread to the West. As the native religion of China, Daoism, together with Confucianism and Buddhism, comprises the main body of traditional Chinese culture. Daoists, in pursuit of the ideal of becoming immortals by practicing Dao, made great efforts to transcend conventional wisdom about life and knowledge and thus helped both to define ancient science in China and to advance it through a great number of inventions. Chinese alchemy, astrology, cuisine, several Chinese martial arts, Chinese traditional medicine, fengshui, and many styles of qigong breath training disciplines have been intertwined with Daoism throughout history.16) Lao Zi’s “rul ing by non-action or inaction” reflects the exploration of anintellectual for the ultimate solution of the social order and individual freedom. His pursuit of vacuity and action through non-action echoes the reality of his time, a period torn by ceaseless wars among states. Lao Zi used。
中国文化简介(英文版)课后习题答案
中国文化简介（英文版）课后习题答案1Chapter 1答案1. Multiple choice (choose the best answer).1) c 2) b 3) a 4) d 5) c2. Fill in the blanks.6) Sumerian, Egyptian, Chinese characters7) red, rectangular, five stars8) form, sound, meaning9) family name, the given name, xing, shi, ming, zi3. Translate the following terms into English.10) a. the Imperial palace/the Forbidden City b. nature reserve c.autonomous region d. special administrative region11) a. the Han nationality b. ethical tradition c. social status d. Chinese character4. Explain the following in English.12) paper making, printing, the compass and gunpowder.13) 甲骨文，钟鼎文，小篆，隶书，楷书5. Answer the following questions.14) Chinese characters mainly have four ways of formation, namelypictographs, indicatives, ideographs and pictophonetic.15) A person’s ming and zi were normally given by his or her elders.Hao was different from both ming and zi in that it was chosen by oneself rather than by others. A person often had more than one hao. Hao was not used to address one another but as a signature in one’s poetic and artistic works. Hao usually revealed one’s aspirations and moral values.16) A Chinese surname is generally composed of one character orsyllable, such as Zhang, Wu, Li, or Yang. There are also two-syllable, three-syllable or even four-syllable surnames, such as Ouyang, Zhuge, Sima, Gongsun, Zhukehun, Buliugu, Houmochen and Jingjiangliushi.Chapter 2答案1．Multiple choice (choose the best answer).1) c 2) d 3) a 4) d 5) a2. Fill in the blanks.6) 221 B.C.7) Silk Road, Chang'an, Xinjiang, Mediterranean Sea8) Opium War9) Sun Yat-sen, feudal monarchical system3. Translate the following terms into English.10) a. the Paleolithic Era b. the Neolithic Age c. slave society d.Dream of Red Mansions11) a. painted pottery b. the spring and Autumn Period c. socialist market economyd. Opium War4. Explain the following in English.12) During the reign of Emperor Wudi (Liu Che, r. 140-87 B.C.), theHan regime reached the period of its greatest prosperity: The emperor conquered the Xiongnu nomads, and sent Zhang Qian as envoy to the Western Regions (Central Asia), and in the process pioneered the route known as the "Silk Road" from the Han capital Chang'an (today's Xi'an, Shaanxi Province), through Xinjiang and onward, finally reaching the east coast of the Mediterranean Sea.13) During the Spring and Autumn and Warring States periods,philosophy and other branches of scholarship were unprecedentedly thriving, with the representatives of various schools vying with each other in writing books to discuss politics and analyze society. Hence the appearance of a situation in which "a hundred schools of thought contended."5. Answer the following questions.14) The Opium War was the turning point in Chinese history in that itmarked the close of the ancient period and the beginning of the modern history.15) The reason why the construction of the Dujiang Dam was soimportant in Chinese ancient times is that it made possible rationalized irrigation supply, flood diversion and sand discharge.16) During his reign, Qin Shi Huang standardized the script,currencies, and weights and measures, established the system of prefectures and counties, and constructed the world-renowned Great Wall as well as a large palace, mausoleum and temporary regal lodges respectively in Xianyang, Lishan and other places.In addition, the life-size terracotta horses and armored warriors excavated from sites near the mausoleum of Qin Shi Huang are known as the eighth wonder of the world.Chapter 3答案1．Multiple choice (choose the best answer).1) d 2) b 3) a 4) b 5) d2. Fill in the blanks.6) 3000, 727) li, yi, yi8) Mo Zi9) Xun Zi, nature, materialism, atheism3. Translate the following terms into English.10) a. Confucianism b. (Sun Wu’s) the Art of War c. Confuciananalects d. Second Sage11) a. the feudal landlord class b. conservatism c. the policy ofbenevolence d. the nine-square field system4. Explain the following in English.12) The six documents (The Six Classics) under Confucius compilationinclude Shi (The Book of Songs), Shu(Collection of Ancient Texts), Li(The Rites), Yue(The Music), Yi (I Ching, or The Classic of Changes), and Chun Qiu (The Spring and Autumn Annuals), which are considered as the classics of Confucianism.13) Mencius believed that human beings are good by nature. He heldthat this goodness is innate and can be acquired without learning or thinking; one’s natural goodness is presented by the exercise of benevolence, righteousness, proprieties and prudence. Evil comes into being when one rejects their natural goodness.5. Answer the following questions.14) According to Mencius, the ideal moral personality is that oneshould never be “corrupted by neither riches nor honors, shaken by neither poverty nor adversity, faltered by neither threats nor force”.15) Han Feizi argued that human nature is basically selfish, and thusthe social order can be maintained only when the ruler imposes rules and his subjects must obey without questioning and enforces them with strict punishments. As a moral and ethical system, “ren” is the central theme of Confucius Analects, which focuses on human love that is hierarchical and differentiated. Thus Confucius created his version of humanism. In his idea, human nature is partially good and partially evil. Based on “ren”, Confucius objected to the fantastic powers that confused the human spirit.16) As one of the greatest thinkers and educators in the history ofChina, Confucius’ contributions lie in the following three aspects. Firstly, he compiled and preserved literary works of three generations. The six documents (The Six Classics) under hiscompilation, including Shi (The Book of Songs), Shu (Collection of Ancient Texts), Li (The Rites), Yue (The Music), Yi (I Ching, or The Classic of Changes), and Chun Qiu (The Spring and Autumn Annuals), are considered as the classics of Confucianism. Secondly, Confucius established a system of philosophical thoughts with “ren”(benevolence) as its fundamental virtue.Thirdly, Confucius established private schools and founded a systematic educational framework.Chapter 4答案1．Multiple choice (choose the best answer).1) d 2) d 3) b 4) b 5) c2. Fill in the blanks.6) naturalistic, primitive7) the simplicity, true nature, selfishness, desire8) Old Master9) the social order, individual freedom3. Translate the following terms into English.10) a. prehistoric times b. pessimism c. Taoism d. men-cosmoscorrespondence11) a. Chinese martial arts b. astrology c. Chinese alchemy d. social order4. Explain the following in English.12) compassion, moderation, and humility13) Mount Longhu (Mount Dragon and Tiger) in Jiangxi Province, MountQingcheng in Sichuan Province, Mount Wudang in Hubei Province, and Mount Qiyun in Anhui Province.5. Answer the following questions.14) The core of Lao Zi’s thought is “Tao” (the Way), by which herefered to the condition of the universe before the creation of the heaven and the earth. Therefore, it is from Tao that all the elements of the universe are derived. Reversal enables Tao to have a circular movement, that is, when the development of anything brings it to one extreme, a reversal to the other extreme takes place.15) Taoism is one of the most important religions in China, whichrefers to a variety of related philosophical and religious traditions and concepts. These traditions have influenced East Asia for over two thousand years and some have spread to the West.As the native religion of China, Daoism, together with Confucianism and Buddhism, comprises the main body of traditional Chinese culture. Daoists, in pursuit of the ideal of becoming immortals by practicing Dao, made great efforts to transcend conventional wisdom about life and knowledge and thus helped both to define ancient science in China and to advance it through a great number of inventions. Chinese alchemy, astrology, cuisine, several Chinese martial arts, Chinese traditional medicine, fengshui, and many styles of qigong breath training disciplines have been intertwined with Daoism throughout history.16) Lao Zi’s “ruling by non-action or inaction” reflects theexploration of an intellectual for the ultimate solution of the social order and individual freedom. His pursuit of vacuity and action through non-action echoes the reality of his time, a period torn by ceaseless wars among states. Lao Zi used the term broadly with simplicity and humility as key virtues, often in contrast to selfish action. On a political level, it means avoiding wars, harsh laws and heavy taxes. For him, it was more important to “see the simplicity, to realize one’s true nature, to cast off selfishness, and to temper desire”.Chapter 5答案1. Multiple choice (choose the best answer).1) c 2) c 3) a 4) a 5) d2. Fill in the blanks.6) the Han Dynasty, the Sui and Tang7) Confucianism, Taoism8) Wutai, the “roof of northern China”9) Buddhist temples, 76 temples, first3. Translate the following terms into English.10) a. Buddhism b. meditation c. Confucianism d. Buddhist temple11) a. the Great Buddha Hall b. Buddhist scripture c. joss stick d. summer resort4. Explain the following in English.12) The Four Wonders of Mount Emei are the “Golden Summit Sunrise”, “Sea of Clouds”, “Buddha’s Halo” and the “Holy Lamp”.13) The Ten Schools of Chinese Buddhism are as follows:a. Reality School or Kosa School or Abhidharma School.b. Satysiddhi School or Cheng-se School.c. Three Sastra School or San-lun School.d. The Lotus School or T'ien-t'ai School.e. The Garland School or Hua-yen.f. Intuitive School or Ch'an School or Dhyana School.g. Discipline School or Lu School or Vinaya School.h. Esoteric School or Chen-yien School or Mantra School.i. Dharmalaksana School or Ch'u-en School or Fa-siang School.j. Pure-land School or Sukhavati School or Ching-t'u School.5. Answer the following questions.14) The cornerstone of Buddhist philosophy is the view that all lifeis suffering.15) the doctrine of Four Noble Truths refers to: life is suffering,the cause of suffering is desire, the answer is to quench desire, and the way to this end is to follow the Eight-Fold Path, which consists of right knowledge, right thought, right speech, right behavior, right livelihood, right effort, right mindfulness and right concentration.16) When Li Bai, famous Chinese poet of the Tang Dynasty, was invitedto Mount Jiuhua, he was overwhelmed by the scene of nine peaks that look like lotus blooms from heaven. Out of admiration he composed the lines: “Two forces preserve between the World and the Heaven; Nine lotuses bloss om on the Jiuhua Mountain.” Since then the mountain has been attracting men of letters throughout the ages, and thus Jiuhua obtained its fame.（注：文档可能无法思考全面，请浏览后下载，供参考。
操作系统英文版课后习题答案整理
1.1What are the three main purposes of an operating system?(1)帮助执行用户程序(2)管理软硬件资源（3）为用户提供操作接口（4）组织用户更好地使用计算机1.2 List the four steps that are necessary to run a program on a completely dedicated machine. Preprocessing > Processing > Linking > Executing.答：（1）预约计算机时间（2)手动把程序加载到内存（3）加载起始地址并开始执行（4）在电脑的控制台监督和控制程序的执行1.6 Define the essential properties of the following types of operating systems:a. Batchb. Interactivec. Time sharingd. Real timee. Networkf. Distributed答：A.批处理系统：成批处理作业，用户脱机工作，单、多道程序运行，适合处理需要很少交互的大型工件； B.交互式系统：交互性，及时性 C.分时系统：同时性，交互性，及时性，独立性D.实时系统：对时间有严格要求，外部事件驱动方式，响应及时，容错-双机备份，可靠性高，通常为特殊用途提供专用系统 E、网络操作系统：网络通信，可实现无差错的数据传输；共享软硬件；网络管理（比如安全控制);网络服务 F、分布式系统：多台分散的计算机经互联网连接而成的系统，处理器不共享内存和一个时钟，每个处理器有自己的内存，它们通过总线互相交流。
1.7 We have stressed the need for an operating system to make efficient use of the computing hardware. When is it appropriate for the operating system to forsake this principle and to“waste” resources? Why is such a system not really wasteful?答：单用户系统，它应该最大化地为用户使用，一个GUI（图形化用户接口）可能会浪费CPU周期，但是它优化了用户和系统的交互。
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Question 6 Explain why low-density polyethylene is good to make grocery bags, however, super high molecular weight polyethylene must be used where strength and very high wear resistance is needed. In general, for thermoplastics, the higher the average molecular weight the higher will be the melting temperature and the higher will be the Young’s modulus of the polymer.
Question 4 What are the major advantages associated with plastics compared to ceramics, glasses, and metallic materials? Commercial polymers are lightweight, corrosion-resistant material with low strength and stiffness, and they are not suitable for use at high temperatures. These polymers are relatively inexpensive and are readily formed into a variety of shapes, ranging form plastic bags to mechanical gears to bathtubs.
heat distortion temperature under load, which is the temperature at which a given deformation of a beam occurs for a standard load. A high deflection temperature indicates good resistance to creep. Glassy State Below the glass temperature Tg, the linear amorphous polymer becomes hard, brittle, and glass-like. This is again not a fixed temperature but a range of temperatures.
initiator is a kind of chemical required in addition polymerization to initiate monomer to start polymerizing reaction. In condensation polymerization, a relatively small molecule (such as water, ethanol, methanol etc.) is formed as a result of the polymerization reaction.
Question 1 What are linear and branched polymers? Can thermoplastics be branched? A linear polymer consists of spaghetti-like molecular chains. In a branched polymer, there are primary polymer chains and secondary offshoots of smaller chains that stem from these main chains.
Degree of Polymerization in general, for a given type of thermoplastic (e.g., polyethylene) the tensile strength, creep resistance, impact toughness, wear resistance, and melting temperature all increase with increasing average molecular weight or degree of polymerization.
Question 5
Hale Waihona Puke What do the terms condensation polymerization, addition polymerization, initiator mean ? Addition polymerization and condensation polymerization are the two main ways to conduct “polymerization”. The polymers derived from these processes are known as addition and condensation polymers, respectively.
At very high temperature, the covalent bonds between the atoms in the linear chain may be destroyed, and the polymer may burn or char. In thermoplastics decomposition occurs in the liquid state, in thermosets the decomposition occurs in the solid state. This temperature Td is the degradation (or decomposition) temperature.
Therefore, the degree of polymerization is: 250000/( ) = ( )MMA molecules per average chain
Question 11
Explain what the following terms mean: decomposition temperature, heat distortion temperature, glass temperature, and melting temperature. Why is it that thermoplastics do not have a fixed melting or glass temperature.
The formation of the most common polymer, polyethylene (PE), from ethylene molecules is an example of addition or chain-growth polymerization. Ethylene, a gas, is the monomer (single unit). The two carbon atoms are joined by a double covalent bond. Each carbon atom shares two of its electrons with the second carbon atom, and two hydrogen atoms are bonded to each of the carbon atoms.
Thermoplastic elastomers are a special group of polymers. They have the processing ease of thermoplastics and the elastic behavior of elastomers.
Question 3 What electrical and optical applications are polymers used for? Explain using examples. We use polymers in photochromic lenses. Plastics are often used to make electronic components because of their insulating ability and low dielectric constant. More recently, significant developments have occurred in the area of flexible electronic devices based on the useful piezoelectricity, semiconductivity, optical and electro-optical properties.
Question 2 Define (a) a thermoplastic, (b ) thermosetting plastics, (c) elastomers, and (d) thermoplastic elastomers. Thermoplastics are composed of long chains produced by joining together monomers; they typically behave in a plastic, ductile manner. The chains may or may not have branches. Thermosetting polymers are composed of long chains (linear or branched) of molecules that are strongly cross-linked to one another to form threedimensional network structures.