Train up running with speed 54 kmph crosses a man in 30 sec.in how much time it can cross a 180 m long platform.x
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Speed of train = 54 × 5/18 = 15 m/s
Length of train = 15 × 30 = 450 m
To cross platform of 180 m, train has to travel 450+180 = 630 m
Therefore, time to cross platform
= 630/15 = 42 seconds
Length of train = 15 × 30 = 450 m
To cross platform of 180 m, train has to travel 450+180 = 630 m
Therefore, time to cross platform
= 630/15 = 42 seconds
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