To pass a bridge of length 250 metre,a train of length 150 meter took 30 seconds. Let us calculate how long will this train take to pass a 130 meter long platform.
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Length of the train = 150 m
Length of the = 250 m =
Total length = 150+250 =400m
Time taken by the train to cover 400 m = 30s
Time taken by the train to cover 1m = 30/400
Length of the platform = 130 m
Total length = 130+150 = 280
Time taken by train to cover 280 m = = 30/400*280 = 21s
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