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    Question

    X / Y = 7/8 and Y / Z = 8/9 find the value of (X+Y):

    (Y+Z): (Z+X).┬а
    A 15:17:11 Correct Answer Incorrect Answer
    B 12:17:16 Correct Answer Incorrect Answer
    C 15:17:16 Correct Answer Incorrect Answer
    D 15:13:10 Correct Answer Incorrect Answer

    Solution

    Given: X / Y = 7/8 Y / Z = 8/9 ┬а X: Y: Z = 7:8: 9 ┬а (X + Y): (Y+Z): (Z+X): = ((7 + 8): (8 + 9): (9 + 7) =15:17:16

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