a man traveled a total distance of 900 km . he traveled one - third of the whole trip by plane and the distance traveled by train is one - half of the distance traveled by bus . if he traveled by train , plane and bus , how many kilometers did he travel by bus ?
"total distance traveled = 900 km . distance traveled by plane = 300 km . distance traveled by bus = x distance traveled by train = x / 2 x + x / 2 + 300 = 900 3 x / 2 = 600 x = 400 km the answer is a ."
divide(multiply(divide(multiply(900, const_2), const_3), const_3), add(const_2, const_3))