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    Question

    If A:B:C = 3:5:7, then find the ratio of (3A + C) : (4B

    - 0.5C)
    A 33:13 Correct Answer Incorrect Answer
    B 32:33 Correct Answer Incorrect Answer
    C 28:27 Correct Answer Incorrect Answer
    D 11:13 Correct Answer Incorrect Answer

    Solution

    ATQ, Let 'A' = '3k', 'B' = '5k' and 'C' = '7k' Required ratio = (3 ├Ч 3k + 7k) : (4 ├Ч 5k - 0.5 ├Ч 7k) = (9k + 7k) : (20k - 3.5k) = 16k : 16.5k = 32 : 33

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