问题标题:
【翻译一道英文出的数学题Phillipcharged$400worthofgoodsonhiscreditcard.Onhisfirstbill,hewasnotchargedanyinterest,andhemadeapaymentof$20.Hethenchargedanother$18worthofgoods.Onhissecondbillamonthlater,h】
问题描述:

翻译一道英文出的数学题

Phillipcharged$400worthofgoodsonhiscreditcard.Onhisfirstbill,hewasnotchargedanyinterest,andhemadeapaymentof$20.Hethenchargedanother$18worthofgoods.Onhissecondbillamonthlater,hewascharged2%interestonhisentireunpaidbalance.HowmuchinterestwasPhillipchargedonhissecondbill?

A.$8.76

B.$7.96

C.$7.60

D.$7.24

E.$6.63

谭春毅回答:
  (400-20+18)*2%=7.96   TheanswerisB.   支付了20,又花了18,所以实际花销是398.
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