SOLUTION: Sue is three times as old as Michelle. 10 years ago she was seven times as old as Michelle was. How old is Sue now?

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Question 805552: Sue is three times as old as Michelle. 10 years ago she was seven times as old as Michelle was. How old is Sue now?
Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
s=3m,
s-10=7*(m-10)
3m-10=7m-70
60=4m
15=m
45=s