every year an amount increases by 1 / 8 th of itself . how much will it be after two years if its present value is rs . 57600 ?
57600 * 9 / 8 * 9 / 8 = 72900 . answer : d
add(add(57600, multiply(divide(1, 8), 57600)), multiply(divide(1, 8), add(57600, multiply(divide(1, 8), 57600))))