Suppose that Greece and Austria both produce fish and cheese. Greece's opportunity cost of producing a pound of cheese is 4 pounds of fish while Austria's opportunity cost of producing a pound of cheese is 10 pounds of fish. By comparing the opportunity cost of producing cheese in the two countries, you can tell that has a comparative advantage in the production of cheese and has a comparative advantage in the production of fish. Suppose that Greece and Austria consider trading cheese and fish with each other. Greece can gain from specialization and trade as long as it receives more than of fish for each pound of cheese it exports to Austria. Similarly, Austria can gain from trade as long as it receives more than of cheese for each pound of fish it exports to Greece. Based on your answer to the last question, which of the following terms of trade (that is, price of cheese in terms of fish) would allow both Austria and Greece to gain from trade? a. 18 pounds of fish per pound of cheese b. 9 pounds of fish per pound of cheese c. 1 pound of fish per pound of cheese d. 3 pounds of fish per pound of cheese

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5. profit maximization and shutting down in the short run suppose that the market for polos is a competitive market. the following graph shows the daily cost curves of a firm operating in this market. 0 2 4 6 8 10 12 14 16 18 20 50 45 40 35 30 25 20 15 10 5 0 price (dollars per polo) quantity (thousands of polos) mc atc avc for each price in the following table, calculate the firm's optimal quantity of units to produce, and determine the profit or loss if it produces at that quantity, using the data from the previous graph to identify its total variable cost. assume that if the firm is indifferent between producing and shutting down, it will produce. (hint: you can select the purple points [diamond symbols] on the previous graph to see precise information on average variable cost.) price quantity total revenue fixed cost variable cost profit (dollars per polo) (polos) (dollars) (dollars) (dollars) (dollars) 12.50 135,000 27.50 135,000 45.00 135,000 if the firm shuts down, it must incur its fixed costs (fc) in the short run. in this case, the firm's fixed cost is $135,000 per day. in other words, if it shuts down, the firm would suffer losses of $135,000 per day until its fixed costs end (such as the expiration of a building lease). this firm's shutdown price—that is, the price below which it is optimal for the firm to shut down—is per polo.

You are evaluating two different silicon wafer milling machines. the techron i costs $285,000, has a three-year life, and has pretax operating costs of $78,000 per year. the techron ii costs $495,000, has a five-year life, and has pretax operating costs of $45,000 per year. for both milling machines, use straight-line depreciation to zero over the project’s life and assume a salvage value of $55,000. if your tax rate is 24 percent and your discount rate is 11 percent, compute the eac for both machines.