If s and t are positive integers such that s/t = 64.28, which of the following could be the remainder when s is divided by t?  Choose the correct choice from the following answers:
A) 12
B) 15
C) 18
D) 21
E) 24
0.28 = 28/100 = 7/25   The remainder must be divisible by 7.   The answer is 21.
<result>D</result>
If s and t are positive integers such that s/t = 64.28, which of the following could be the remainder when s is divided by t?