Question 175418: a father is now four times as old as his son. If the sum of their ages ten years ago was sixty. find thrie present ages
Answer by rapaljer(4671)   (Show Source):
You can put this solution on YOUR website! Let x = son's age
4x = father's age
x-10 = son's age 10 years ago
4x-10= father's age 10 years ago
x-10 + 4x-10=60
5x-20=60
5x=80
x=16 son's age now
4x=64 father's age now (or was that his grandfather??)
Check: 10 years ago, son was 6 and father was 54, and the sumof their ages is 60.
R^2
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