How long will a train 150 metres long and travelling at a speed of 45 kmph, take tocross a platform of length 250 meters?
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speed= 45km/hr = 45×5/18m/s=12.5m/s
distance=150+250=400
time=distance/speed=400/12.5=
distance=150+250=400
time=distance/speed=400/12.5=
arsh688:
32s
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