Question
A train 200 m long passes a man standing on a platform
in 8 seconds. It then passes a bridge of length 300 m. How long does it take to cross the bridge?Solution
Speed of train = distance / time (while passing the man) = 200 m / 8 s = 25 m/s To cross the bridge, the train must cover (200 + 300) = 500 m. Time = distance / speed = 500 / 25 = 20 seconds
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