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SSC Sample Paper Mock Test-13 SSC CGL Tear-II Paper-1

  • question_answer
    A train crosses a pole in 15 s and a platform 100 m long in 25 s. Its length (in m) is

    A) 50

    B)  100    

    C)  150

    D)  200

    Correct Answer: C

    Solution :

    Let the length of train be x metre. \[\therefore \]      \[\frac{x}{15}=\frac{x+100}{25}\]\[\Rightarrow \]\[\frac{x}{3}=\frac{x+100}{5}\] \[\Rightarrow \]   \[5x=3x+300\] \[\Rightarrow \]   \[2x=300\] \[\Rightarrow \]   \[x=\frac{300}{2}=150\,\,\text{m}\]


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