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简答题 GRE
2012-10-12



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答案解析

C．
To increase by 20%，you multiply by 1．2．Todecrease by l5%，you multiply  by 0．85．The end result will be(1．2)(0．85)=1．02，a2%increase，no matter which is done first：(0．85)(1．2)=1．02．