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标题: NN们帮忙看看这道数学吧~~ [打印本页]

作者: shaoyipeng 时间: 2010-3-20 10:13 标题: NN们帮忙看看这道数学吧~~

Before being simplified, the instructions for computing income tax in country R were to add 2% of one's annual income to the average of 100 units of country R's currency and 1% of one's annual income. Which of the following represents the simplified formula for computing the income tax, in country R's currency, for a person in that country whose annual income is I?

50+I/200

50+3I/100

50+I/40

100+I/50

100+3I/100

作者: toneere 时间: 2010-3-20 21:15

我觉得是，

2%I + (100+1%I)/2
=50+I/40

有答案么？

作者: xiangrui 时间: 2010-3-22 06:56

咦。。本人不是什么大牛，路过看看。请问楼主有正确答案么？我觉得是50＋I/40但是不知道对不对。。。

作者: gmaeeor 时间: 2010-3-24 07:00

这题主要是题干比较绕，意思是说把（2% of one's annual income）和（100 units of country R's currency与1% of one's annual income）加起来，最后化简的答案就是50+I/40

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