SOLUTION: Abby is half as old as her dad, but twice as old as her brother scott if scott is 9 how old is their dad?

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Question 660708: Abby is half as old as her dad, but twice as old as her brother scott if scott is 9 how old is their dad?
Answer by T-Maree(17) About Me  (Show Source):
You can put this solution on YOUR website!
9 x 2 = 18
18 x 2 = 36
therefore Scott is 9, Abby is 18 and their dad is 36