China can make 10 computers and 20 cell phones an hour, and japan can make 8 computers and 15 cell phones an hour. 1 who has the comparative advantage in making computers? cell phones?2 if two countries were to trade with each other, who would export computers? cell phones?

Comparative advantage can be defined as what another company/country makes my efficiently than another.

Therefore China has the comparative advantage for making computers and cell phones.

Answer 2 should be that China should be both exporting computers and cell phones to Japan.

Yes i believe the answer is b. it seems to be the most logical answer. hope this . : )