[求助]急，这道有关余数的题怎么做？

各位XDJM，帮帮忙啊，我最差的就是有关余数除数的题啦，请大家给个解答过程，多谢拉！

Q2:

When positive integer x is divided by positive integer y, the remainder is 9.  If x/y = 96.12, what is the value of y?

A.      96

B.      75

C.      48

D.      25

E.       12

答案是B

Because x/y=96.12, so 0.12y=9

y=75