SOLUTION: 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

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Question 175419: 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(4551) About Me  (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