On a sum of money, the simple interest for 2 years is Rs.660, while the compound interest is Rs.696.30, the rate of interest being the same in both the cases. The rate of interest is Choices.
A) 10% B) 11% C) 12% D) 10.5% E) None
Solution   Difference in C.I and S.I for 2 years	= Rs(696.30-660)   =Rs. 36.30.   S.I for one years	= Rs330.   S.I on Rs.330 for 1 year	=Rs. 36.30   Rate	= (100x36.30/330x1)%   =11%.   Answer 11%
<result>B</result>
On a sum of money, the simple interest for 2 years is Rs.660, while the compound interest is Rs.696.30, the rate of interest being the same in both the cases. The rate of interest is