A sum of money deposited at C.I. amounts to Rs.2420 in 2 years and to Rs.3146 in 3 years. Find the rate percent? Select.
A) 11	B) 30	C) 28	D) 24	E) 82

Rationale: "explanation : 2420 - - - 726 100 - - - ? = > 30 % answer : option b"
Answer: B