A sum of Rs. 13500 amounts to Rs. 15500 in 4 years at the rate of simple interest. What is the rate of interest? Select
A) 4%
B) 5%
C) 6%
D) 8%
E) 14%
S.I. = (15500 - 13500) = Rs. 2000/-   Rate = (100 * 2000) / (12500 * 4)= 
<gadget id="calculator">(100 * 2000) / (12500 * 4)</gadget>
<output>4</output>
4%   4%NSWER:4%
<result>A</result>
A sum of Rs. 13500 amounts to Rs. 15500 in 4 years at the rate of simple interest. What is the rate of interest?