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?  Pick.
A) 96 B) 75 C) 48 D) 25 E) 12

Rationale: "x = qy + 9 , where q is the quotient x / y = ( q y + 9 ) / y = q + ( 9 / y ) = 96.12 = 96 + 0.12 = > q = 96 9 / y = 0.12 = > y = 75 answer is b ."
Answer: B