SOLUTION: A man is 42 years old and his son is 12. In how many years will the father be twice as old as his son.

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Question 649317: A man is 42 years old and his son is 12. In how many years will the father be twice as old as his son.
Answer by unlockmath(1599) About Me  (Show Source):
You can put this solution on YOUR website!
Hello,
We can set up an equation where x represents the years.
42+x=(12+x)2
Expand:
42+x=24+2x
Subtract x and 24:
x=18 years
Make sense?
RJ
www.math-unlock.com