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    Question

    In a mixture of alcohol & water, 30 litres

    water is mixed due to which ratio changes from 3:4 to 1:2. Find initial quantity of mixture. (in litres)
    A 163 Correct Answer Incorrect Answer
    B 105 Correct Answer Incorrect Answer
    C 121 Correct Answer Incorrect Answer
    D 128 Correct Answer Incorrect Answer

    Solution

    let initial quantity of alcohol be 3x litres & water be 4x litres.
    ATQ,
    3x/4x+30 = 1/2
    6x = 4x + 30 ⇒ x = 15
    Initial quantity of mixture = 3x + 4x = 105 liters

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