If difference between compound interest and simple interest on a sum at 10% P.a. for 2 years is Rs.51 then sum is
Pick one:
A) rs . 5000	B) rs . 5100	C) rs . 5800	D) rs . 6000	E) rs . 6200

Rationale: p ( r / 100 ) ^ 2 = c . i - s . i p ( 10 / 100 ) ^ 2 = 51 5100 answer : b
Answer: B