Suppose that Spain and Denmark both produce rye and stained glass. Spain's opportunity cost of producing a pane of stained glass is 4 bushels of rye while Denmark's opportunity cost of producing a pane of stained glass is 10 bushels of rye. By comparing the opportunity cost of producing wine in the two countries, you can tell that has a comparative advantage in the production of wine and has a comparative advantage in the production of rye.

Suppose that Spain and Denmark consider trading wine and rye with each other. Spain can gain from specialization and trade as long as it receives more than of rye for each bottle of wine it exports to Denmark. Similarly, Denmark can gain from trade as long as it receives more than of wine for each bushel of rye it exports to Spain.

Based on your answer to the last question, which of the following terms of trade (that is, price of wine in terms of rye) would allow both Denmark and Spain to gain from trade? Check all that apply.

a. 1 bushel of rye per bottle of wine
b. 8 bushels of rye per bottle of wine
c. 9 bushels of rye per bottle of wine
d. 3 bushels of rye per bottle of wine

Suppose that xtel currently is selling at $40 per share. you buy 500 shares using $15,000 of your own money, borrowing the remainder of the purchase price from your broker. the rate on the margin loan is 8%. a. what is the percentage increase in the net worth of your brokerage account if the price of xtel immediately changes to (a) $44; (b) $40; (c) $36? (leave no cells blank - be certain to enter "0" wherever required. negative values should be indicated by a minus sign. round your answers to 2 decimal places.) b. if the maintenance margin is 25%, how low can xtel’s price fall before you get a margin call? (round your answer to 2 decimal places.) c. how would your answer to requirement 2 would change if you had financed the initial purchase with only $10,000 of your own money? (round your answer to 2 decimal places.) d. what is the rate of return on your margined position (assuming again that you invest $15,000 of your own money) if xtel is selling after one year at (a) $44; (b) $40; (c) $36? (negative values should be indicated by a minus sign. round your answers to 2 decimal places.) e. continue to assume that a year has passed. how low can xtel’s price fall before you get a margin call? (round your answer to 2 decimal places.)