A sum of Rs. 12,500 amounts to Rs. 15,500 in 4 years at the rate of simple interest .What is the rate of interest ? Choose the correct answer: A) 3% B) 4% C) 5% D) 6% E) 7%
Solution   S.I. = Rs. (15500 - 12500) = Rs. 3000.   Rate =(100x3000/12500x4) = 6 %.   Answer 6%
<result>D</result>
A sum of Rs. 12,500 amounts to Rs. 15,500 in 4 years at the rate of simple interest .What is the rate of interest ?