SOLUTION: A father is 41 years old and his son is 9. In how many years will the father be three times as old as his son?

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Question 775828: A father is 41 years old and his son is 9. In how many years will the father be three times as old as his son?
Answer by tanjo3(60) About Me  (Show Source):
You can put this solution on YOUR website!
Let n be the number of years until the stated condition is met, then:

41 + n = 3(9 + n)
41 + n = 27 + 3n
14 = 2n
7 = n

In 7 years, the father will be three times as old as his son (he will be 48 and his son will be 16).