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SSC Sample Paper Mock Test-17 SSC CGL Tear-II Paper-1

  • question_answer
    Two pipes can fill a tank separately in 20 min and 30 min, respectively. If both the pipes are opened simultaneously, then the tank will be filled in

    A) 10 min

    B)  12 min

    C)  15 min

    D)  25 min

    Correct Answer: B

    Solution :

    Required time \[=\frac{xy}{x+y}=\frac{20\times 30}{20+30}=\frac{20\times 30}{50}=12\]


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