A sum of Rs. 12500 amounts to Rs. 17000 in 4 years at the rate of simple interest. What is the rate of interest? Choose the correct choice from the following choices.
A) 9%	B) 5%	C) 6%	D) 8%	E) 14%
S.I. = (17000 - 12500) = Rs. 4500/-   Rate = (100 * 4500) / (12500 * 4)= 
<gadget id="calculator">(100 * 4500) / (12500 * 4)</gadget>
<output>9</output>
9%   9%NSWER:9%
<result>A</result>
A sum of Rs. 12500 amounts to Rs. 17000 in 4 years at the rate of simple interest. What is the rate of interest?