a fellow borrowed a certain sum of money at 4 % per annum at simple interest and in 4 years the interest amounted to rs . 1260 less than the sum lent . what was the sum lent ?
"p - 1260 = ( p * 4 * 4 ) / 100 p = 1500 answer : c"
divide(1260, subtract(const_1, divide(multiply(4, 4), const_100)))