Answer: The opportunity cost for making one pair of pants is making 1/4 of a shirt. The opportunity cost of making one shirt is 4 pairs of pants.
Explanation: If he can make 8 pairs of pants or 2 shirts in one our, we divide 8/8 to get 1 pair of pants. This means we would divide 2/8 to get .25 or 1/4.
For making if he can make 2 shirts or 8 pants in 1 hour. We divide 2/2 to get 1. This means we would divide 8/2 to get 4.