On a sum of money, the S.I. for 2 years is $600, while the C.I. is $615, the rate of interest being the same in both the cases. The rate of interest is? Choose the correct choice:
A) 4%	B) 5%	C) 6%	D) 7%	E) 8%
Difference in C.I. and S.I for 2 years = $615 - $600 = $15   S.I for one year 615 -  600= 
<gadget id="calculator">615 -  600</gadget>
<output>15</output>
$15   S.I for one year= $300   S.I. on $300 for 1 year = $15   Rate = (100 * 15)/(300)= 
<gadget id="calculator">(100 * 15)/(300)</gadget>
<output>5</output>
5%   The answer is 5%.
<result>B</result>
On a sum of money, the S.I. for 2 years is $600, while the C.I. is $615, the rate of interest being the same in both the cases. The rate of interest is?