In one day, Sue can change the oil on 20 cars or the tires on 20 cars. In one day, Fred can change the oil on 20 cars or the tires on 10 cars. Sue's opportunity cost of changing oil is ________ than Fred's and her opportunity cost for changing tires is ________ than Fred's:

In one day, Sue can change the oil on 20 cars or the tires on 20 cars. In one day, Fred can change the oil on 20 cars or the tires on 10 cars. Sue's opportunity cost of changing oil is ________ than Fred's and her opportunity cost for changing tires is ________ than Fred's:




A) greater; greater
B) greater; less
C) less; greater
D) less; less


Answer: B



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