A sum of money deposited at C.I. amounts to Rs.1890 in 2 years and to Rs.2350 in 3 years. Find the rate percent?  Answers:
A) 30 %  B) 24 %  C) 20 %  D) 19 %  E) 50 %

Rationale: "1890 - - - 460 100 - - - ? = > 24 % answer : b"
Answer: B