rs . 200 amounts to rs . 800 in 8 years at simple interest . if the interest is increased by 5 % , it would amount to how much ?
"( 200 * 5 * 8 ) / 100 = 80 200 + 80 = 280 answer : d"
multiply(power(add(const_1, divide(5, const_100)), 8), 200)