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    Question

    A factory produces three types of products: A, B, and C.

    Initially, the production ratio of A to B to C is 3:4:5. The total number of products produced initially is 9000. After a month, the production of type A increases by 20%, type B decreases by 10%, and type C increases by 5%. What is the total number of products produced after the changes?
    A 9100 Correct Answer Incorrect Answer
    B 9215 Correct Answer Incorrect Answer
    C 9337 Correct Answer Incorrect Answer
    D 9400 Correct Answer Incorrect Answer
    E none Correct Answer Incorrect Answer

    Solution

    Initial production of A = (3/12) * 9000 = 2250 Initial production of B = (4/12) * 9000 = 3000 Initial production of C = (5/12) * 9000 = 3750 After changes: A's new production = 2250 * 1.20 = 2700 B's new production = 3000 * 0.90 = 2700 C's new production = 3750 * 1.05 = 3937.5 Total production = 2700 + 2700 + 3937.5 = 9337.5 ≈ 9337 Answer: c) 9337

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