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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    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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