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Question

A 150 m long train is moving with a uniform velocity of 45 km/hr. The time taken by the train to cross a bridge of length 850 m is:


  1. 80 s

  2. 60 s

  3. 40 s

  4. 20 s


Solution

The correct option is A

80 s


Given, length of train =150 m, length of bridge =850 m, and velocity of train =45 kmph=45×518 ms1

Total distance to be covered for crossing the bridge

= length of train + length of bridge

=150+850=1000 m

Time=Distancevelocity=100045×518=80 s 

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