prep上一道DS求助！

cheriseliu

Before being sinplified, the instructions for computing income tax in Country R were to add 2 percent of one's annual income to the average (算术平均数) of 100 units of Country R's currency and 1 percent of one's annyal income. Which of the following represents the currency, formula for computing the income tax, in Country R's currency, for a person in that country whose annual income is I?
A 50+I/200
B 50+3I/100
C 50+I/40
D 100+I/50
E 100+3I/100


答案是C。 我题目就没读明白，导致算错了。请读懂了的人翻译一下，谢谢啦！

xxpatzz

2%的个人年收入 + （100块钱+1%个人年收入）的平均数

I=annual income

2I/100 + (100+I/100)/2 = I/50 + 50  + I/200 = I/40 + 50

cheriseliu

谢谢！！