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SSC Quantitative Aptitude Boats & Streams Question Bank Train and Boat (I)

  • question_answer
    A train crosses a pole in 15 s, while it crosses a 100 m long platform in 25 s. The length of the train is

    A) 125 m

    B) 135 m

    C) 150 m

    D) 175 m

    Correct Answer: C

    Solution :

    [c] Let the length of the train be x m. Then, \[\frac{x}{15}=\frac{(100+x)}{25}\] \[\Rightarrow \]            \[25x=1500+15x\] \[\Rightarrow \]            \[10x=1500\] \[\Rightarrow \]            \[x=150\] Hence, the length of the train is \[150\,m.\]


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