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SSC Sample Paper SSC CGL - Sample Paper-17

  • question_answer
    A, B and C start together from the same place to walk round a circular path of length 12 km. A walks at the rate of 4 km/h B 3 km/h and \[C\frac{3}{2}\text{km/h}\text{.}\] They will meet together at the starting place at the end of

    A) 10 h                             

    B) 12 h    

    C) 15 h                             

    D) 24 h  

    Correct Answer: D

    Solution :

    Time taken to complete a revolution \[A\Rightarrow \frac{12}{4}=3\,h\] \[B\Rightarrow \frac{12}{3}=4\,h\] \[C\Rightarrow \frac{12}{3}\times 2=8\,h\] \[\therefore \] Required time = LCM of 3, 4 and 8 h = 24 h


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