数学题请教math-prep破解

shawn2700 · 发表于 2012-10-14 15:34:29

175.Before being simplified, the instructions for computing income tax in Country R were to add 2 percent of one's annual income to the average (arithmetic mean) of 100 units of Country R's currency and 1 percent 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 ?

楼主表示完全看不懂这道题什么意思啊，也没有思路。请各位帮忙！！谢谢尤其是红字部分，楼主不知道指的是什么东西。

sally9031 · 发表于 2012-10-14 20:52:55

income tax 是此人年收入的2% 加上 100单位货币和1%此人年收入的平均值。
income tax ＝　　２％Ｉ＋(１００+１％Ｉ)/2

shawn2700 · 发表于 2012-10-14 22:12:08

哦，明白了，谢谢啦！！

数学题请教math-prep破解

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