A sum of money deposited at C.I. amounts to Rs.5000 in 5 years and to Rs.5750 in 6 years. Find the rate percent? Choose the correct choice from the following answers:
A) 1 %  B) 5 %  C) 10 %  D) 15 %  E) 20 %

Rationale: 5000 - - - 750 100 - - - ? = > 15 % answer : d
Answer: D