Question

find the length of bridge in which a train 140m long travelling at 54kmph can cross in 30 seconds​

Answer 1

Answer:

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Step-by-step explanation:

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Answer 2

If the train has to cross the bridge then the engine of the train has to travel a distance of the bridge(x) and also another 130 metres. so the total distance is (x+130) meters. From the given information of speed and time, it covered a detailed of 375 meters. On subtraction of the train length (130 meters), we get 375 -130 = 245 meters.