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    Two trains are travelling in the same direction with speeds of 30km/hr and 58km/hr respectively.A man in the slower train passes the faster train in 18s.Find the length of the faster train.

  • 100
  • 120
  • 140
  • 135
  • Explanation:

    Relative speed=(58-30)=28km/hr=28*(5/18)

    Time=18s

    Length of the train=28*(5/18)*18=140m