Simple interest on a certain sum of money for 2 years at16% per annum is one fourth the compound interest on Rs. 4000 for 2 years at 8% per annum. The sum placed on simple interest is
Answers:
A) Rs.4000  B) Rs.665.6  C) Rs.520  D) Rs.166.4  E) None
Solution   C.I.	=Rs[4000x(1+8/100)Â²-4000]   Rs.(4000x108/100x108/100-4000)	= Rs.665.6.   Sum	=Rs. [166.4x100 /2x16]   = Rs.520.   Answer Rs.520
<result>C</result>
Simple interest on a certain sum of money for 2 years at16% per annum is one fourth the compound interest on Rs. 4000 for 2 years at 8% per annum. The sum placed on simple interest is