A 255-m long train is running at a speed of 72 km/h. It crosses a platform of length 745 m in:
Show answer & explanation
Correct answer: A
Explanation
The correct answer is Option 1 i.e. 50 seconds.
Length of the train = 255 m
Length of the platform = 745 m
Total length to be crossed by the train = 255 + 745 = 1000 m
Speed of the train = 72 km/h = 72 × 5/18 = 20 m/s
Time taken by the train to cross the platform = Distance/Speed = 1000/20 = 50 seconds