two pipes a and b can fill a tank in 12 and 24 minutes respectively . if both the pipes are used together , then how long will it take to fill the tank ?
"required time = 12 * 24 / 12 + 12 = 12 * 24 / 36 = 24 / 3 = 8 minutes answer : b"
add(multiply(12, const_100), multiply(multiply(subtract(const_1, multiply(add(divide(const_1, 12), divide(const_1, 24)), const_2)), 12), const_60))