[求助]GWD-MATH01-26

Running at their respective constant rates, machine X takes 2 days longer to produce w widgets than machine Y.  At these rates, if the two machines together produce 5/4 w widgets in 3 days, how many days would it take machine X alone to produce 2w widgets?

请教大家这道题怎么做啊？

此题已解，谢谢大家

我设了两个方程 ：

1。    x-2 = y

2.    (1/x + 1/y) * 3 = 5/4

1 带入 2 ， 可方程解出来的不是整数，不知道大家怎么做这道题？