SOLUTION: a father is now 3 times as old as his son.twelve years ago,he was six times as old as his son.how old are the son and the father

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Question 948193: a father is now 3 times as old as his son.twelve years ago,he was six times as old as his son.how old are the son and the father
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
F=3S
F-12=6%28S-12%29
F-12=6S-72
F-6S=-60
Substituting,
3S-6S=-60
-3S=-60
S=20
So then,
F=3%2820%29
F=60