Sally has to decide whether to take the bus or drive to work.The bus ride costs $1.25.The drive costs $1.17 in gas,but will add $0.08 in wear and tear on her car.According to the cost-benefit principle,if all she cares about is money,Sally should...A.take the bus.B.drive.C.not prefer either over the other.
问题描述：
Sally has to decide whether to take the bus or drive to work.The bus ride costs $1.25.
The drive costs $1.17 in gas,but will add $0.08 in wear and tear on her car.According to the cost-benefit principle,if all she cares about is money,Sally should...
A.take the bus.B.drive.C.not prefer either over the other.
答