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Railways Sample Paper RRB (Assistant Loco Pilot) Sample Test Paper-2

  • question_answer
    A train 150 m long passes a km stone in 30 seconds and another train of the same length travelling in opposite direction in 10 seconds. The speed of the second train is :

    A)  \[125\,km/hr\]        

    B)  \[25\,km/hr\]   

    C)         \[90\,km/hr\]       

    D)       \[75\,km/hr\]

    Correct Answer: C

    Solution :

    Speed of first train \[=\frac{150}{30}=5m/\sec \] Let the speed of second train be \[x\text{ }m/sec\] Relative speed \[=(5+x)\,m/\sec \] \[\therefore \]    \[\frac{300}{5+x}=10\]             \[50+10x=300\]             \[x=\frac{300-50}{10}=25m/\sec .\] \[=25\times \frac{18}{5}=90km/h\]


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