SOLUTION: A father is four times older than his son. However,20 years later, he will only be twice as old as the son.What is the father's present age?

Question 766996: A father is four times older than his son. However,20 years later, he will only be twice as old as the son.What is the father's present age?
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
A father is four times older than his son. However,20 years later, he will only be twice as old as the son.What is the father's present age?
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Now:
F = 5S
In 20 years:
F+20 = 2(S+20)
sub for F
5S + 20 = 2S + 40
3S = 20
S = 20/3
F = 100/3 years
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PS "4 times older" is not the same as "4 times as old"
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