1.a club has 480 members.60%of the members are mem and the r

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1.a club has 480 members.60%of the members are mem and the rest are woman.if the number of male members is increased by 25%,what is the new percentage of female members?
2.in a test there were 80 questions.limin answered 92.5%of the questions and she got 75% correct on all the questions she answered.what is her makes in percentage?
3.nigel paid $26 for a pen when it was sold at a discount of 20%.kimberly bought the smae type of pen at $26.65.what percentage discount did kimberly get?

1.一个俱乐部有480名成员,60%是男人,其余的是女人.如果男人数量增加25%,女人所占百分比是多少?
原来男人有480*60%=288(人)
原来女人有480-288192(人)
男人增加后有288*(1+25%)=360(人)
男人增加后俱乐部有192+360=552(人)
女人所占百分比192/552=0.34786约=34.8%
2.一次比赛有80道题,李民回答了92.5%的问题,她的正确率有75%,她总的正确分用百分比表示为80*92.5%*75%=55.5%
3.nigel为一只笔付了$26,那只笔是有20%的优惠卖给她的.kimberly为那一只笔付了$26.65,kimberly享受了%的优惠?
笔原价26/(1-20%)=$32.5
优惠(32.5-26.65)/32.5=0.18=18%

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