Table 3-31 Labor Hours Needed to Make 1 Pound of: Amount Produced in 40 hours Meat Potatoes Meat Potatoes Farmer 8 hours/pound 5 hours/pound 5 pounds 8 pounds Rancher 4 hours/pound 10 hours/pound 10 pounds 4 pounds Refer to Table 3-31. For the farmer, the opportunity cost of 15 pounds of meat is Select one: a. 12 pounds of potatoes. b. 16 pounds of potatoes. c. 20 pounds of potatoes. Solution It takes farmer 3 hours to produce 15 pounds of meat. Since he could trade with the Rancher, the opportunity cost is: (4 potatoes / hour)(3 hours) = 12 potatoes. Answer is A .