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    Question

    In a warehouse, the ratio of the number of boxes containing

    books, clothes, and electronics is 7:5:3, respectively, and the average number of boxes of each type is 80. What is the average number of boxes containing books and clothes?
    A 96 Correct Answer Incorrect Answer
    B 67 Correct Answer Incorrect Answer
    C 85 Correct Answer Incorrect Answer
    D 70 Correct Answer Incorrect Answer

    Solution

    ATQ,

    Let the number of boxes containing books = тАШ7xтАЩ

    Then, the number of boxes containing clothes = тАШ5xтАЩ

    And, the number of boxes containing electronics = тАШ3xтАЩ

    Image

    So, the average number of boxes containing books and clothes =


    Image

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