How Long will Train Take to Pass a Post? If

A train 180 mts long is running at a speed of 90 km/h. How long will it take to pass a post?

  1. 7.8 sec.
  2. 8 sec
  3. 7.2 sec
  4. 8.2 sec
Monis Rasool Professor Asked on 30th August 2015 in Maths.
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1 Answer(s)

Answer: (3) 7.2 sec

Explanation:-
The length of the train = 180 m
The speed of the train = 90 km/hr
Then, the speed of the train in m/sec = 90 x 5/18
= 5 x 5
= 25 m/sec

Time taken by train to pass a post  = 180/25
= 7.2 sec.
Hence, the answer is (3) 7.2 sec

Anurag Mishra Professor Answered on 31st August 2015.
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