It takes Ross 6 hours to produce a bushel of corn and 2 hours to wash and polish a car. It takes Courtney 6 hours to produce a bushel of corn and 1 hour to wash and polish a car. Courtney and Ross cannot gain from specialization and trade, since it takes each of them 6 hours to produce 1 bushel of corn.

Question

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Courtney has a comparative advantage in washing and polishing cars because she can do it in less time than Ross. Ross, by focusing on producing corn, where their productivity is the same, allows both to benefit from specialization and trade based on Courtney's lower opportunity cost for car washing.

It Takes Ross 6 Hours to Produce a Bushel of Corn