Subject: mathqa
Question: the compound interest on a sum for 2 years is rs . 832 and the simple interest on the same sum for the same period is rs . 800 . the difference between the compound and simple interest for 3 years will be
Option: 
A: rs . 98.56
B: rs . 66.56
C: none of these
D: rs . 66.58
Answer: A