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[Data Sufficiency]
试题详情
题目：
Guy's net income equals his gross income minus his deductions. By what percent did Guy's net income change on January 1, 1989, when both his gross income and his deductions increased?
(1) Guy's gross income increased by 4 percent on January 1, 1989.
(2) Guy's deductions increased by 15 percent on January 1, 1989.
选项:
答案:
E
提问：
我选的C，按我理解的是【g*（1+4%）-d*（1+15%）】-（g-d）/g-d，当时没有化简就选的C，但答案是E，不知道是我理解错了列错了式子，还是因为化简不出来所以选E。
解答：
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提问：
我选的C，按我理解的是【g*（1+4%）-d*（1+15%）】-（g-d）/g-d，当时没有化简就选的C，但答案是E，不知道是我理解错了列错了式子，还是因为化简不出来所以选E。
解答：
点赞0
阅读808
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