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    Question

    If A:B = 2:3, B:C = 4:5, and C:D = 6:7, find

    A:D.
    A 17:20 Correct Answer Incorrect Answer
    B 25:13 Correct Answer Incorrect Answer
    C 16:35 Correct Answer Incorrect Answer
    D 15:17 Correct Answer Incorrect Answer

    Solution

    ATQ,

    A:B:C:D = 2:3 × 4:5 × 6:7 Normalize B: 3→4 → multiply all by 4/3. A:B:C:D = 8:12:15:17.5 → ratio A:D = 8:17.5 = 16:35.

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