2. Sample Papers
  3. SSC

SSC Sample Paper SSC CGL - Sample Paper-22

  • question_answer
    Four taps can individually fill a cistern of water in 1 h, 2 h, 3 h and 6 h respectively. If all the four taps are opened simultaneously, the astern can be filled in how many minutes?

    A) 20                                

    B) 30

    C) 35                                

    D) 40

    Correct Answer: B

    Solution :

    Required time \[=\frac{1}{\frac{1}{1}+\frac{1}{2}+\frac{1}{3}+\frac{1}{6}}=\frac{6}{6+3+2+1}\] \[=\frac{6}{12}h\]  or \[\frac{6}{12}\times 60=30\min \]


You need to login to perform this action.
You will be redirected in 3 sec spinner