后天考试~一道数学~求教~感觉好难

iriszhu

Before being simplified, the instruction for computing income tax in country C were to add 2 percent of one's annual income to the average of 100 units of country C's currency and 1 percentof one's annual income. Which of the following represent the simplified formula for computing the income tax, in country C'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 我完全晕了~这是什么题啊……

iriszhu

求大牛帮助~后天考试~纠结这道题啊！

Raymond_GMAT

add 2 percent of one's annual income to the average of 100 units of country C's currency and 1 percentof one's annual income
2% * I +(100 + 1% * I) / 2 = 2.5% * I + 50 = 1/40*I + 50