Multiple Choice Questions on Suppose A B and O are three taps fixed to the bottom of a tank with nb........... for CAPF (AC) Exam Preparation

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Multiple Choice Questions

Suppose A B and O are three taps fixed to the bottom of a tank with nb...........

Quantitative Aptitude( Paper-I ) Pipes&cistern
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    Suppose A, B and O are three taps fixed to the bottom  of  a   tank   with   draining   capacity 1 : 2: 3. When all three of them are on, it takes 1 hour to drain out the full tank. If A and  C  are on but B is off, then how much time , in minutes, will it take to empty out  a full  tank of water?

    This questions was previously asked in
    CAPF 2023 Paper-1
    View All CAPF Previous Year Papers

    75

    Incorrect Answer

    90

    Correct Answer

    105

    Incorrect Answer

    120

    Incorrect Answer
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    Explanation:

    90.

    • A will drain in 1/6
    • B will drain in 1/3
    • C will drain in 1/2
    • A and C will drain in
    • 1/6 + 1/2
    • = (2+6)/(12)
    • =8/12
    • =2/3
    • Reversing it
    • 3/2= 1 and half hour.
    • I.e. 90 minutes

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