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SSC Sample Paper SSC CHSL (10+2) Sample Test Paper-9

  • question_answer
    A train crosses a platform in 30 seconds travelling with a speed of 60 km/h. If the length of the train be 200 metres. then the length (in metres) of the platform is

    A) 400                              

    B) 300        

    C) 200                              

    D) 500        

    Correct Answer: B

    Solution :

    Speed of train = 60 kmph \[=\left( 60\times \frac{5}{18} \right)\] m/sec. \[=\frac{50}{3}\] m/sec. If the length of platform be \[=x\] metre, then Speed of train \[=\frac{Length\text{ }of\text{ }\left( train\text{ }+\text{ }platform \right)}{Time\text{ }taken\text{ }in\text{ }crossing}\] \[\Rightarrow \]\[\frac{50}{3}=\frac{200+x}{30}\] \[\Rightarrow \] \[50\times 10=200+x\] \[\Rightarrow x=500-200=300\] metre


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