what will be the difference between simple and compound interest at 8 % per annum on a sum of rs . 1000 after 4 years ?
"s . i . = ( 1000 * 8 * 4 ) / 100 = rs . 320 c . i . = [ 1000 * ( 1 + 8 / 100 ) 4 - 1000 ] = rs . 360.5 difference = ( 360.5 - 320 ) = rs . 40.5 answer : c"
subtract(subtract(multiply(1000, power(add(divide(8, const_100), const_1), 4)), 1000), multiply(multiply(1000, divide(8, const_100)), 4))