Question

    A container contains 540 ml of a liquid with milk and water

    in ratio 5:4. After adding ‘x’ ml of both milk and water, the ratio becomes 11:9. Find the value of x.
    A 52 Correct Answer Incorrect Answer
    B 30 Correct Answer Incorrect Answer
    C 62 Correct Answer Incorrect Answer
    D 42 Correct Answer Incorrect Answer

    Solution

    ATQ,

    Milk = (5/9) × 540 = 300 ml

    Water = 540 – 300 = 240 ml

    ATQ:

    (300 + x)/(240 + x) = 11/9

    ⇒ 9(300 + x) = 11(240 + x)

    ⇒ 2700 + 9x = 2640 + 11x

    ⇒ 2x = 60

    ⇒ x = 30

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