Question
Length of a train, whose speed is 72 km/h, is 360 metres. Find the time taken (in seconds) by train to cross a bridge of length 240 metres.
Solution
Speed of train = 72 km/h = 72 × (5/18) = 20 m/s
Required time = (360 + 240) ÷ 20 = 600 ÷ 20 = 30 seconds
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