Multiple Choice Questions on A train 600 m long is running at a speed of 90 kmph If it crosses a tunnel in 30 seconds then the le........... for CDS Exam Preparation

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Multiple Choice Questions

A train 600 m long is running at a speed of 90 kmph If it crosses a tunnel in 30 seconds then the le...........

Quantitative Aptitude (CDS) Problems on trains
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    A train 600 m long is running at a speed of 90 kmph. If it crosses a tunnel in 30 seconds, then the length of the tunnel (in meter) is;

     

    130m

    Incorrect Answer

    140m

    Incorrect Answer

    150m

    Correct Answer

    160m

    Incorrect Answer
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    Explanation:

    Speed = 90(5/18)m/sec = 25m/sec
    Time = 30sec
    Let the length of the tunnel be x metres.
    Then, (600+x)/30=25
    600+x = 750
    x=750-600
    x=150m

    By: bhavesh kumar singh
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