Simple interest on a sum at 4% per annum for 2 years is Rs.80.The compound interest on the same sum for the same period is :
Options:
A) Rs.81.60  B) Rs.160  C) Rs.1081.60  D) None of these  E) Cannot be determined
Explanation:   Principal = Rs. (100×80/4×2) = Rs.1000   C.I = Rs. [{1000×(1+4/100)2−1000}] = Rs.81.60   Correct Option: Rs.81.60
<result>A</result>
Simple interest on a sum at 4% per annum for 2 years is Rs.80.The compound interest on the same sum for the same period is :