A passenger in train `P` travelling at 1 km/min uses his stop watch and finds that another train `Q` travelling in the opposite direction, completely passed his window in 3 seconds. If the length of the train `Q` is 87.50 m. Try to find its speed in Km/hr or in any conversion?.

• let x m/sec speed of train and 50/3 m/sec of man in opposite dir.
  therefore 87.5/x+50/3 = 3
  => 12.5 m/sec
• 13 years agoHelpfull: Yes(4) No(0)