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PREP一道数学DS题求解

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楼主
发表于 2009-11-17 22:48:40 | 只看该作者 回帖奖励 |倒序浏览 |阅读模式
Each person in a certain group supports only one of the two candidates R and T. Of the people in the group, 45 percent support Candidate R and the rest support Candidate T.  How many people in the group are in favor of a flat tax?



(1)  Of the people in the group who support Candidate R, 58 percent are in favor of a flat tax.



(2)  the people in the group who support Candidate T, 22 are in favor of a flat tax.

请大家帮忙!!多谢
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沙发
发表于 2009-11-17 23:03:35 | 只看该作者
选E吧~~~具体人数都不知道,不可能算出支持R的里面多少事喜欢flat tax的~~
板凳
 楼主| 发表于 2009-11-17 23:07:12 | 只看该作者
啊原来如此....我还在想,该怎么列式子
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