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

  • question_answer
    Two pipes A and B can fill a tank in 20 minutes and 30 minutes respectively. If both pipes are opened together, the time taken to fill the tank is:

    A) 50 minutes                    

    B) 12 minutes

    C) 25 minutes                    

    D) 15 minutes

    Correct Answer: B

    Solution :

    Required time \[=\frac{1}{\frac{1}{20}+\frac{1}{30}}\]\[=\frac{20\times 30}{50}=12\] minutes


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