SOLUTION: help pls! Three years ago, Frances was three times as old as Rose. Now, she is 12 years older than Rose. What are their ages? problem solution Thanks!

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Question 818792: help pls!
Three years ago, Frances was three times as old as Rose. Now, she is 12 years older than Rose. What are their ages? problem solution
Thanks!
Answer by TimothyLamb(4379) About Me  (Show Source):
You can put this solution on YOUR website!
(f + 3) = 3(r + 3)
f = r + 12
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(f + 3) = 3(r + 3)
f + 3 = 3r + 9
r + 12 + 3 = 3r + 9
2r = 15 - 9
2r = 6
---
r = 3
f = 15
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