SOLUTION: father is twice as old as his son. three years ago, he was 19 less than thrice the age of his son. how old is the father now?

Question 1110812: father is twice as old as his son. three years ago, he was 19 less than thrice the age of his son. how old is the father now?
Answer by ankor@dixie-net.com(22740) (Show Source): You can put this solution on YOUR website!
father is twice as old as his son.
f = 2s
three years ago, he was 19 less than thrice the age of his son.
f - 3 = 3(s-3) - 19
f - 3 = 3s - 9
f = 3s - 9 - 19 + 3
f = 3s - 25
replace f with 2s
2s = 3s - 25
25 = 3s - 2s
s = 25 yrs is the son's age
ad
2(25) = 50 yrs is the father's age
:
:
See if that checks out in the statement
"three years ago, he was 19 less than thrice the age of his son."
50 - 3 = 3(25-3) - 19
47 = 3(22) - 19
47 = 66 - 19
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