The compound interest on a certain sum for 2 years at 10% per annum i…

Question

The compound interest on a certain sum for 2 years at 10% per annum is Rs. 525. The simple interest on the same sum for double the time at half the rate percent per annum is:

Accepted Answer

Option B. Rs. 500. Answer & Solution Answer: Option B Solution: & Let the sum be Rs. P & Then, \, P ( 1 + 10100 )^2 - P = 525 & P [ ( 1110 )^2 - 1 ] = 525 & P = 525 × 10021 = 2500 & Sum = Rs.\,2500 & So, S.I. = Rs. ( 2500 × 5 × 4100 ) & \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, = Rs.\,500