Question
A 750-metre long train takes 15 seconds to cross a pole.
If it takes 45 seconds to cross a bridge, then find the length of the bridge.Solution
Speed of the train = (750 / 15) = 50 m/s
Distance covered by the train in 45 seconds = 50 × 45 = 2,250 metres
Length of the bridge = 2,250 750 = 1,500 metres = (1500 / 1000) = 1.5 km
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