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

  • question_answer
    A train passes a platform 110 m long in 40 s and a boy standing on the platform in 30 s. The length of the train is

    A) 100 m

    B) 110 m

    C) 200 m

    D) 330 m

    Correct Answer: D

    Solution :

    [d] Here,\[x=110\,m,\]\[{{t}_{1}}=30\,s,\]\[{{t}_{2}}=40\,s\] \[\therefore \]Length of the train \[=\frac{x\times {{t}_{1}}}{{{t}_{2}}-{{t}_{1}}}=\frac{110\times 30}{40-30}\] \[=330\,m\]


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