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标题: [求助]PREP中的一道数学题 [打印本页]

作者: zhanghongzxl 时间: 2009-6-20 00:51
标题: [求助]PREP中的一道数学题

Before being simplified; the instruction for computing income tax in country R were to add 2 percent of one's annual income to the average of 100 units of cuntry R's currency and 1 percent of one's annual income.

which of the following represents the simplified the formula for computing the income tax, in country R's currency, for a person in that country whose annual income is I?

请问下这道题题干问的是什么啊？（第一段）。谢谢。

作者: 新月残梦 时间: 2009-6-20 21:34
这道题目其实就是等式化简啦。。。就是把文字叙述的一个个写出来。。最后化简下来找个答案。。这道题我也做到过。。。

作者: escargot1999 时间: 2009-6-21 02:58
同问....看了很久还是不明所以...

作者: 天冥翼 时间: 2009-6-21 15:23

恶心的average。。。害我第一次也很晕。。。

说的是100货币单位和1%年收入的average，所以就应该是2%I+(100+1%I)/2

化简可得答案

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