Answers to Problems a 2. In time it takes ted to wash a car he can wax three cars So his oppo bortunity cost of washing one car is three wax jobs. In the time it takes Tom to wash a car. he can wax two cars. So his opportunity cost of washing one car is two wax jobs. Because Tom's opportunity cost of washing a car is lower than Ted s. Tom has a comparative advantage in washing carsAnswers to Problems ◼ 2. In time it takes Ted to wash a car he can wax three cars. So his opportunity cost of washing one car is three wax jobs. In the time it takes Tom to wash a car, he can wax two cars. So his opportunity cost of washing one car is two wax jobs. Because Tom’s opportunity cost of washing a car is lower than Ted’s, Tom has a comparative advantage in washing cars