[求助]GMAT Prep 一题

郁闷，我看不懂题目：

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) 100 units of country R’s currency and 1 percent of one’s annual income.

Please simplify for computing the income tax for a person whose annual income is I?

Please simplify for computing the income tax for a person whose annual income is I?

答案：

50+I/40

请求各位帮助！

鞠躬。

50+I/40

请求各位帮助！

鞠躬。

50+I/40

请求各位帮助！

鞠躬。

咋一句话重复出现那么多，奇怪

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

应纳税=2%的年收入+100与1%年收入的算术平均值

是不是这样？

to:OlivaEver

应该是的，谢谢你啊