A sum of money deposited at C.I. amounts to Rs.2420 in 2 years and to Rs.3025 in 3 years. Find the rate percent?  Choose one
A) 11 B) 10 C) 28 D) 25 E) 82

Rationale: "explanation : 2420 - - - 605 100 - - - ? = > 25 % answer : option d"
Answer: D