Answer:
The person with Absolute advantage is the one that produces more of a good than the other.
<em><u>Dina </u></em><em>has an absolute advantage in the production of alfalfa, and </em><em><u>Charles</u></em><em> has an absolute advantage in the production of barley. </em>
The person with Comparative Advantage is the person who produces something at a lower opportunity cost.
Charles Opportunity Costs
Producing Alfalfa gives 12 bushels per acre instead of 6 bushels for Barley.
Producing 1 Alfalfa means 6/12 = 0.5 bushels Barley is given up
Producing 1 bushel of Barley means 12/6 = 2 bushels Alfalfa is given up.
Dina Opportunity Costs
Producing Alfalfa gives 15 bushels per acre instead of 5 bushels for Barley.
Producing 1 Alfalfa means 5/15 = 0.33 bushels of Barley is given up
Producing 1 bushel of Barley means 15/5 = 3 bushels of Alfalfa is given up.
<em>Charles's opportunity cost of producing 1 bushel of barley is </em><em><u>2</u></em><em> bushels of alfalfa, whereas Dina's opportunity cost of producing 1 bushel of barley is </em><em><u>3</u></em><em> bushels of alfalfa. Because Charles has </em><em><u>lower</u></em><em> a opportunity cost of producing barley than Dina, </em><em><u>Charlie</u></em><em> has a comparative advantage in the production of barley, and </em><em><u>Dina</u></em><em> has a comparative advantage in the production of alfalfa.</em>