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    Question

    In a mixture containing 80 liters of gold and 'a' liters

    of copper, if 20% of the mixture is removed and 16 liters of copper is subsequently added to the remaining mixture, it results in a final mixture where the quantities of gold and copper are equal. What is the value of 'a'?
    A 55 liters Correct Answer Incorrect Answer
    B 60 liters Correct Answer Incorrect Answer
    C 52 liters Correct Answer Incorrect Answer
    D 45 liters Correct Answer Incorrect Answer
    E none of these Correct Answer Incorrect Answer

    Solution

    According to question, 0.8 × 80 = 0.8a + 16 64 = 0.8a + 16 0.8a = 48 a = 60 litres

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