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 . 64000 ?
64000 * 9 / 8 * 9 / 8 = 81000 answer : a
add(add(64000, multiply(divide(1, 8), 64000)), multiply(divide(1, 8), add(64000, multiply(divide(1, 8), 64000))))