A train is moving at a speed of 132 km/hour. If the length of the train is 110 meters, how long will it take to cross a railway platform 165 meters long.
A. 7 second
B. 7.5 second
C. 8 second
D. 8.5 second
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Correct Answer : B.
As we need to calculate answer in seconds, so first convert speed into meter/sec. we know 1 km/hr = 1*(5/18) m/sec So, Speed = 132* (5/18) = 110/3 m/sec Distance need to be covered in passing the platform = Length of train + length of platform = 110 + 165 = 275 meters Time = Distance/Speed