SOLUTION: In 4 years the age of father will be three times as his son's age. Six years ago father's age was 7 times as his son, Find their current ages? ? Complete solution

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Question 819252: In 4 years the age of father will be three times as his son's age. Six years ago father's age was 7 times as his son, Find their current ages? ? Complete solution
Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
f-6=7(s-6)
f=7(s-6)+6
f=7s-42+6
f=7s-36
f+4=3(s+4)
f=3(s+4)-4
f=3s+12-4
f=3s+8
7s-36=3s+8
4s=44
s=11
f=41
check
45=3*15
35=7*5
ok