If s and t are positive integers such that s/t = 4.12, which of the following could be the remainder when s is divided by t ?	Choices:  A) 2  B) 4  C) 8  D) 20  E) 30
The remainder is 0.12 or 12/100. You can go one step further and say that X/Y=12/100, where X and Y are whole numbers. Plug in all the answer choices for X and see which one makes Y a whole number.   One thing that jumps out at me is that A, B, C, and D are all even. E on the other hand is odd. Why? Maybe I'll start plugging in here first.   30/Y=12/100   12Y=3000   Y=250   Answer: 30.
<result>E</result>
If s and t are positive integers such that s/t = 4.12, which of the following could be the remainder when s is divided by t ?