What is the rate percent when the simple interest on Rs.4000 amount to Rs.320 in 2 Years?
Answers:  A) 4 %  B) 4.1 %  C) 4.2 %  D) 4.3 %  E) 4.5 %

Rationale: "interest for 1 year = 320 / 2 = 160 interest on rs 4000 p / a = 160 interest rate = 160 / 4000 * 100 = 4 % answer : a"
Answer: A