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    Question

    A seller sold a mixture of oil and water for ₹270 at a

    price of ₹(9/8) per liter. The mixture originally contained 180 liters of oil. After adding ‘x’ liters of oil and (x + 20) liters of water, the ratio of oil to water in the mixture becomes 2:1. Find the value of ‘x’.
    A 16 Correct Answer Incorrect Answer
    B 15 Correct Answer Incorrect Answer
    C 20 Correct Answer Incorrect Answer
    D 40 Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    According to the question,

    Total quantity of mixture = 270 × (8/9) = 240 litres

    Quantity of water in the mixture = 240 – 180 = 60 litres

    According to the question,

    {(180 + x)/(60 + x + 20)} = 2/1

    Or, 180 + x = 160 + 2x

    Or, x = 20

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