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SSC Sample Paper SSC CGL - Sample Paper-29

  • question_answer
    Two taps can fill a tub in 5 min and 7 min respectively. A pipe can empty it in 3 min. If all the three are kept open simultaneously, when will the tub be full?

    A) 60 min             

    B) 85 min

    C) 90 min             

    D) 105 min

    Correct Answer: D

    Solution :

    Net filling in 1 min\[=\frac{1}{5}+\frac{1}{7}-\frac{1}{3}\] \[=\frac{21+15-35}{105}=\frac{1}{105}\] Hence, the tub will be full in 105 min.


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