Discussion of Question with ID = 073 under Problems-on-Trains

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A train of length 108 m crosses a bridge at a speed of 40 km/h in 23 seconds. What is the length of the bridge(approx.)?


148 meters.


256 meters.


300 meters.


200 meters.

Ans: a

In 23 seconds the train covers a distance of 23 × 40 × (5/18) = 256 meters. This distance is the sum of the lengths of the train and the bridge. Subtracting the length of the train we get the length of the bridge = 256 - 108 = meters.

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