Question

    170 litres of Mixture ‘A’ (water + alcohol) contains 45% water and remaining alcohol while 120 litres of mixture ‘B’ (milk + water) contains 20 litres more milk than water. Find the sum of quantities of water in both the given mixtures.

    A 126.5 litres Correct Answer Incorrect Answer
    B 116.5 litres Correct Answer Incorrect Answer
    C 106.5 litres Correct Answer Incorrect Answer
    D 96.5 litres Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    Quantity of water in mixture ‘A’ = 170 × 0.45 = 76.5 litres Let the quantity of water in mixture ‘B’ = ‘x’ litres Then, quantity of milk in mixture ‘B’ = (x + 20) litres So, x + (x + 20) = 120 Or, 2x + 20 = 120 Or, x = (120 – 20) ÷ 2 Or, x = 50 Therefore, quantity of water in mixture ‘B’ = x = 50 litres So, sum of quantity of water in both the mixtures = 76.5 + 50 = 126.5 litres.

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