Simple interest on a certain sum of money for 3 years at 8% per annum is half the compound interest on Rs. 4000 for 2 years at 10% per annum. The sum placed on simple interest is:	Choose the correct choice from the following answers.
A) Rs.1550	B) Rs.1650	C) Rs.1750	D) Rs.2000	E) Rs.3000
C.I = 4000 * (1+10/100)2 –4000   = 4000 *11/10 + 11/10 –4000 = Rs.840   :. Sum = Rs.(420 * 100)/ (3 *8) = Rs.1750   ANSWER:Rs.1750
<result>C</result>
Simple interest on a certain sum of money for 3 years at 8% per annum is half the compound interest on Rs. 4000 for 2 years at 10% per annum. The sum placed on simple interest is: