Multiple Choice Questions on 8 litres are drawn from a flask containing milk and then filled with water The operation is performe........... for Mathematics - All Exams Preparation

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Multiple Choice Questions

8 litres are drawn from a flask containing milk and then filled with water The operation is performe...........

Quant (SSC) Mixture and Alligation
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    8 litres are drawn from a flask containing milk and then filled with water. The operation is performed 3 more times. The ratio of the quantity of milk left and total solution is 81/625. How much milk the flask initially holds?

    10 ltr

    Incorrect Answer

    20 ltr

    Correct Answer

    30 ltr

    Incorrect Answer

    40 ltr

    Incorrect Answer
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    Explanation:

    let initial quantity be Q, and final quantity be F
    F = Q*(1 – 8/Q)^4
    81/625 = (1-8/Q)^4
    3/5 = 1 – 8/Q
    Q = 20

    By: Amit Kumar
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