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      Question

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

      (Y+Z): (Z+X). 
      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   X: Y: Z = 7:8: 9   (X + Y): (Y+Z): (Z+X): = ((7 + 8): (8 + 9): (9 + 7) =15:17:16

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