g友分享gre数学机经讨论题(11)
发布时间：2016-03-01 编辑：查字典英语网小编
下面是参加了海外gre数学机经的同学分享的gre数学机经，希望通过自己的分析和解答能给其他gre考生提供思路和指导，也可以和周边的g友一起来讨论这些题目，对于gre数学考试的复习是相当有帮助的。
51、问一个公司一年的revenue增加了多少~
A. 一年的expense增加了25%
B.一年的gross profit减少了6%
revenue = gross profit - expense
条件1+条件2)
设以前revenue = gp ex
现在为revenue= 0.94gp 1.25 ex
差值为：-0.06gp 0.25ex 初值不知，求解不出 选E
52、问是否x^2x
0
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