SOLUTION: In 11 years a farther will be twice old as his son . Thirteen years ago he was 14 times as old as his son . Find their present ages

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Question 850131: In 11 years a farther will be twice old as his son . Thirteen years ago he was 14 times as old as his son . Find their present ages
Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
f+11=2*(s+11)
f-13=14*(s-13)
f = 41, s = 15