the difference between simple and compound interests on a certain sum for 2 years at 4 % per annum is rs . 50 . the sum is
"difference between 2 yr ci and si is given by pr ^ 2 . . pr ^ 2 = 50 p * r / 100 * r / 100 = 50 p * 4 / 100 * 4 / 100 = 50 p = ( 50 * 100 * 100 ) / 4 * 4 p = 31,250 answer : c"
multiply(subtract(power(add(divide(divide(4, const_2), const_100), const_1), const_2), add(divide(4, const_100), const_1)), 2)