a train 70 metres long is running at 80 kilometre per hour how much time will it take to cross platform 130 metre long?
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train have to cover = 70 + 130
= 200 m
By proportion
80000 m = 3600 seconds
200 m = X
X = (3600 × 200) / 80000
= 9 second
Train will take 9 sec to cover platform.
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