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    Question

    In a container, the ratio of milk to water is 2:1. After

    pouring in 20 litres of water, the new ratio becomes 2:3. What is the final volume of the mixture?
    A 100 litres Correct Answer Incorrect Answer
    B 65 litres Correct Answer Incorrect Answer
    C 90 litres Correct Answer Incorrect Answer
    D 50 litres Correct Answer Incorrect Answer

    Solution

    ATQ,

    Milk : Water = 2:1 → Total = 3 parts

    Let total = 3x

    → Milk = 2x, Water = 1x

    Water after adding = 1x + 20

    New ratio = 2x : (x + 20) = 2 : 3

    Image

    Original = 3 × 15 = 45 litres

    Final = 45 + 20 = 65 litres

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