A train takes 45 seconds to pass a platform and 30 seconds to pass a man standing on the platform.
If the train is 180 m long, what is the length of the platform?
Show answer & explanation
Correct answer: B
Explanation
Length of the train = 180 meters, Time taken to cross the man = 30 seconds, Time taken to cross the platform = 45 seconds
Speed = 180 / 30 = 6 m/s
Distance covered while crossing the platform = Speed × Time = 6 × 45 = 270
Length of the platform = 270 − 180 = 90 meters