Multiple Choice Questions on Two pipes can fill the pool together in 12 hours One tap take 10 hours more time than other tap Find........... for CDS Exam Preparation

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Multiple Choice Questions

Two pipes can fill the pool together in 12 hours One tap take 10 hours more time than other tap Find...........

Quantitative Aptitude (CDS) Pipes&cistern
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    Two pipes can fill the pool together in 12 hours.One tap take 10 hours more time than other tap.Find the time taken by fast tap to fill the pool?

    20hour

    Correct Answer

    10hour

    Incorrect Answer

    16hour

    Incorrect Answer

    22hour

    Incorrect Answer
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    Explanation:

    let tap take t and t+10 time
     12(1/t + 1/t+10) =1
     12(2t +10)=t^2+10t
     24t+120 =t^2 +10t
     t^2-14t-120=0
     t=20 t=-6

    By: bhavesh kumar singh
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