Elucidate what is michelle's opportunity price of producing 200 potatoes in a year? what is michelle's cost of producing 50 chickens in a year? What is james cost of producing 80 potatoes in a year? what is james opportunity cost of producing 40 chickens in a year? which person has an absolute advantage in which activities? which person has a comparative advantage in potatoes? which person has a comparative advantage in in chickens?