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If a 200 m long train crosses a platform of the same length as that of the train in 20 seconds, then the speed of the train is
A. 50 km/hr
B. 60 km/hr
C. 70 km/hr
D. 72 km/hr

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If a 200 m long train crosses a platform of the same length as that of the train in 20 seconds, then the speed of the train is
A. 50 km/hr
B. 60 km/hr
C. 70 km/hr
D. 72 km/hr
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7 Answers

  1. if train length is 200
    platform length is = train length
    =200+200=400m
    speed=distance/time
    =400/20=20m/s
    =20*(18/5)=72km/h

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  2. Length of train 🚅 = 200m
    Platform length= 200m
    Time = 20 seconds
    So, total length = 200+200 = 400m
    Speed = Distance/Time
    400/ 20 = 20m/s
    Convert into km/hr = 20m/s× (18/5) = 72 km/ hr

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