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 . 70400 ?
70400 * 9 / 8 * 9 / 8 = 89100 . answer : a
add(add(70400, multiply(divide(1, 8), 70400)), multiply(divide(1, 8), add(70400, multiply(divide(1, 8), 70400))))