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    Question

    The ratio of zinc and copper in a brass pieces is 6:7.

    How much zinc will be there in 390 kg of such a piece?
    A 120 kg Correct Answer Incorrect Answer
    B 160 kg Correct Answer Incorrect Answer
    C 150 kg Correct Answer Incorrect Answer
    D 180 kg Correct Answer Incorrect Answer

    Solution

    Amount of zinc = 390 ├Ч (6/13) kg = 180 kg

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