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Pankaj Chaudhary
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The length of the bridge, which a train 130 metres long and travelling at 45 km/hr can cross in 30 seconds, is:

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  1. Answer: Option (C) 245 m
    Explanation:
    Speed = 45 x 5 m/sec = 25 m/sec.
    18 2
    Time = 30 sec.

    Let the length of bridge be x metres.

    Then, 130 + x = 25
    30 2
    2(130 + x) = 750

    x = 245 m.

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