Simple interest on a certain sum of money for 3 years at 8% per annum…

Question

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:

Accepted Answer

Option C. Rs. 1750. Answer & Solution Answer: Option C Solution: & C .I .\, = Rs.\, [ 4000 × ( 1 + 10100 )^2 - 4000 ] & \,\,\,\,\,\,\,\,\,\,\,\,\, = Rs.\, ( 4000 × 1110 × 1110 - 4000 ) & \,\,\,\,\,\,\,\,\,\,\,\,\, = Rs.\,840 & Sum = Rs.\, ( 420 × 1003 × 8 ) & \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\…