求大神帮忙解数学题

lingling002 · 发表于 2013-11-22 13:55:30

prep里的一道题目，看不懂题意

Alice's take-home pay last year was the same each month, and she saved the same fraction of her take-home pay each month. The total amount of money that she had saved at the end of the year was 3 times the amount of that portion of her monthly take-home pay that she did not save. If all the money that she saved last year was from her take-home pay, what fraction of her take-home pay did she save each month?

(A) 1/2

(B) 1/3

(C) 1/4

(D) 1/5

(E) 1/6

maobaobao800 · 发表于 2013-11-22 14:09:46

A每月工资数一样，每月按同样的比例存钱。年底存钱总数是一个月没存数额的3倍，问每月存的比例。

设比例x，每月工资为1

12x=3（1-x）
x=1/5

求大神帮忙解数学题

所属分类: GMAT考试

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