a train 220 m long is running with a speed of 30 kmph how long it will pass 80m bridge
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Distance to cover = 220+80 = 300m
Speed = 30 km/h = 30×5/18 = 25/3 m/s
Time = d/s = 300/(25/3) = 300×3/25 = 36 seconds
Train will take 36 seconds to cross the bridge.
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