How Much Time Taken by a Train to Pass The a Post ? If

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

  1. 8.2 sec
  2. 7.8 sec
  3. 8 sec
  4. 7.2 sec
Anurag Mishra Professor Asked on 18th August 2015 in Maths.
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1 Answer(s)

Answer:  (4) 7. 2 sec

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

Time taken by a train to pass s post = 180/25
= 7.2 sec

Hence, the answer is (4) 7 . 2  sec.

Anurag Mishra Professor Answered on 18th August 2015.
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