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.
7 second
Incorrect Answer7.5 second
Correct Answer8 second
Incorrect Answer8.5 second
Incorrect AnswerExplanation:
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
Time = 275 * 3/110 = 15/2 = 7.5 sec.
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By: Amit Kumar