Answer:
By comparing the opportunity cost of producing wine in the two countries, you can tell that SPAIN has a comparative advantage in the production of wine and DENMARK 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 4 bushels of rye for each bottle of wine it exports to Denmark. Similarly, Denmark can gain from trade as long as it receives more than 1/10 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.
Explanation:
Spain
wine = 4 bushels of rye
bushels of rye = 1/4 wine
Denmark
wine = 10 bushels of rye
bushels of rye = 1/10 wine