Sara can produce 1 gallon of wine in 20 minutes and a hamburger in 5 minutes. She has 2 hours to produce a burger and wine. What is the opportunity cost of a gallon of wine for Sara? What is the opportunity cost of a burger for Sara?

Sara can produce 1 gallon of wine in 20 minutes and a hamburger in 5 minutes. She has 2 hours to produce a burger and wine. What is the opportunity cost of a gallon of wine for Sara? What is the opportunity cost of a burger for Sara?