the difference between the compound interest and simple interest on a certain sum of money at 5 % per annum for 2 years is 45 . then the original sum is ?
"for 2 years = ( 1002 d ) / r 2 = ( 1002 × 45 ) / ( 5 × 5 ) = ( 10000 × 45 ) / 25 = rs . 18000 / - c"
divide(multiply(multiply(const_100, const_100), 45), const_100)