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SSC Sample Paper SSC CGL - Sample Paper-3

  • question_answer
    A pipe can empty a tank in 40 mm. A second pipe with diameter twice much as that of the first is also attached with the tank to empty it. The two together can empty the tank in

    A)  8 min              

    B)  \[13\frac{1}{3}\] min

    C)  30 min            

    D)  38 min

    Correct Answer: B

    Solution :

    According to the question the first pipe empty the tank in 40 min and the diameter of the second pipe is twice that of the first that means the second pipe will empty the tank in 20 min. Thus, both of the pipes will empty the tank in \[\frac{40\times 20}{40+20}\] \[=\frac{800}{60}=\frac{40}{3}\] \[=13\frac{1}{3}\,\min \]


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