Question
Length of a train, whose speed is 84 km/h, is 420
metres. Find the time taken (in seconds) by train to cross a bridge of length 280 metres.Solution
Speed of train = 84 km/h = 84 Ă— (5/18) = 70/3 m/s
Required time = (420 + 280) Ă· (70/3) = 700 Ă— (3/70) = 30 seconds
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