Multiple Choice Questions on Pipe A can fill a tank in 5 hours pipe B in 10 hours and pipe C in 30 hours If all the pipes are ope........... for Mathematics - All Exams Preparation

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Multiple Choice Questions

Pipe A can fill a tank in 5 hours pipe B in 10 hours and pipe C in 30 hours If all the pipes are ope...........

Quant (SSC) Pipes&cistern
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    Pipe A can fill a tank in 5 hours, pipe B in 10 hours and pipe C in 30 hours. If all the pipes are open, in how many hours will the tank be filled

    2.5 hours

    Incorrect Answer

    2 hours

    Incorrect Answer

    3.5 hours

    Incorrect Answer

    3 hours

    Correct Answer
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    Explanation:

    Part filled by A in 1 hour = 1/5
    Part filled by B in 1 hour = 1/10
    Part filled by C in 1 hour = 1/30
    Part filled by (A+B+C) in 1 hour =
    1/5+1/10+1/30=1/3
    So all pipes will fill the tank in 3 hours.

    By: MIRZA SADDAM HUSSAIN
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