Multiple Choice Questions on Two taps A and B can fill a tank in 10 hours and 15 hours respectively If both the taps are opened t........... for Mathematics - All Exams Preparation

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Multiple Choice Questions

Two taps A and B can fill a tank in 10 hours and 15 hours respectively If both the taps are opened t...........

Quant (SSC) Pipes&cistern
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    Two taps A and B can fill a tank in 10 hours and 15 hours respectively. If both the taps are opened together, the tank will be full in ?

    5 hr

    Incorrect Answer

    6 hr

    Incorrect Answer

    4 hr

    Correct Answer

    3 hr

    Incorrect Answer
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    Explanation:

    If A can do a piece of work in x hours and B can do a piece of work in y hours.
    Then A and B together will do the work in = 1/x+1/y
    Time taken by A = 10 hours
    Time taken by B = 15 hours
    Time taken by A and B = (15x10 / 15+10) = 6 hours.

    By: MIRZA SADDAM HUSSAIN
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