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    Question

    A train 610 metres long is running at a speed of 72

    km/hr. If it crosses a tunnel in 1 minute, then the length of the tunnel (in meters) is: TYPE 8
    A 590 m Correct Answer Incorrect Answer
    B 450 m Correct Answer Incorrect Answer
    C 650 m Correct Answer Incorrect Answer
    D 300 m Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    Let the length of the tunnel be ‘x’ meter. Speed = 72 × (5/18) m/sec = 20 m/sec Time = 1 minute = 60 seconds. Let the length of the tunnel be x metres. Then, (610 + x)/60 = 20 =>(610 + x) = 1200 => x = 590 m

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