On a sum of money, simple interest for 2 years is Rs 660 and compound interest is Rs 696.30, the
rate of interest being the same in both cases.  Choose the correct answer:	A) 8%	B) 9%	C) 10%	D) 11%	E) None of these
Explanation:   Difference between C.I and S.I for 2 years = 36.30   S.I. for one year = 330.   S.I. on Rs 330 for one year = 36.30   So R% = \frac{100*36.30}{330*1} = 11%   Answer: 11%
<result>D</result>
On a sum of money, simple interest for 2 years is Rs 660 and compound interest is Rs 696.30, the
rate of interest being the same in both cases.