问prep1 ps 62题

zzqqyy87517

62.7564-!-item-!-187;#058&005577

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


答案是D
这个题看的迷迷糊糊的，有大侠能帮我翻译一下理一下思路吗
谢谢 呵呵

contactserena

请问你的这个prep是哪里下载的？为什么我下的没有选项答案？

谢谢

fanhuide123

x+y=z
3x=12y
x=4y
y/z=1/5