[求助]一道prep数学难题

[attachimg]64715[/attachimg]

请问各位，这题prep该怎么解，答案是D

想了超久，也查了很久，一直找不到帮忙想一下吧

Thanks

假设ALICE每月TAKE-HOME PAY为Y,SAVE X，根据题意可得：

12X=3(Y-X)

解得： 5X=Y，选D，做完了

感谢，终于了解了，

终于解决这个百思不得其解的问题

原来我对句意了解有误

终于解决这个百思不得其解的问题

原来我对句意了解有误

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.

原来是每年跟每月比较

我一直误以为是每年跟每年比较，难怪一直算不出来