SOLUTION: Nina is 6 years older than Francine is. Three years ago, Nina was four times as old as Francine was then. What is the present age of each?

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Question 535595: Nina is 6 years older than Francine is. Three years ago, Nina was four times as old as Francine was then. What is the present age of each?
Answer by ptaylor(2198) About Me  (Show Source):
You can put this solution on YOUR website!
Let x=Francine's age now; x-3=Francine's age 3 yrs ago
Then x+6=Nina's age now; x+6-3=x+3=Nina's age 3 yrs ago
Soooo, our equation to solve is:
x+3=4(x-3) get rid of parens
x+3=4x-12
subtract 3 and also 4x from each side
x-4x+3-3=4x-4x-12-3
-3x=-15
x=5----Francine's age now
x+6=5+6=11 Nina's age now
CK
"Nina is 6 yrs older than Francine is"---11-5=6---OK
"3 Yrs ago, Nina was 4 times as old as Francine"---(11-3)=4(5-3)--OK
Hope this helps---ptaylor