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A passenger train running at a speed of 72 km/hr crosses a 400m long platform in 30 sec. What is the length of the train?
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- 200 m
- 150 m
- 180 m
- 240 m
Correct Option: A
Speed of train in m/sec = 72 km/hr x 5/18 = 20 m/sec
Distance covered in meter = Time taken in crossing the platform in sec x speed in meter = 30 sec x 20 m/sec = 600m
Now, we know , Distance covered by train in crossing the platform = Length of train + Length of Platform
Therefore, length of the train = 600m - 400m = 200m
