Answer :



speed =distance/time

speed of the moving train is 54km / hr

so in meter /sec speed of train will be 22.5meter/sec

  • so distance cover by train =speed *time
  • so distance=1012.5meter
  • length of the train =150meters
  • so length of the bridge=distance travelled by train /length of train
  • so length of bridge=1012.5/150
  • so length of bridge=67.5meters

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