SOLUTION: a man 42 years old has a son 12. in how many years will the father be twice as old as his son?

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Question 664336: a man 42 years old has a son 12. in how many years will the father be twice as old as his son?
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
a man 42 years old has a son 12. in how many years will the father be twice as old as his son?
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The difference = 30 years.
--> 30 & 60