A train passes a station platform in 36 seconds and a man standing on the platform in 20 seconds. If the speed of the train is 54 km/hr, what is the length of the platform?

A. 120 m
B. 240 m
C. 300 m
D. None of these

• Train passes 36 sec but man standing 20sec so (36-20=16)
  speed= 15m/sec
  length=16*15=240m
• 11 years agoHelpfull: Yes(14) No(2)
• speed of train in m/sec=54*5/18=15 m/sec
  length of train=15*20=300m
  the train goes 300m in 20 sec,then it will go (300*36/20)m =540 in 36 sec.
  the length of the station is=(540-300)=240m
• 12 years agoHelpfull: Yes(10) No(5)
• Speed = 54 x 5 m/sec = 15 m/sec.
  18
  Length of the train = (15 x 20)m = 300 m.
  
  Let the length of the platform be x metres.
  
  Then, x + 300 = 15
  36
  x + 300 = 540
  
  x = 240 m.
• 10 years agoHelpfull: Yes(3) No(1)