SOLUTION: Luis is 4 times as old as Ashley. Nine years ago, Luis was 7 times as old as Ashley. How old is Ashley now

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Question 884753: Luis is 4 times as old as Ashley. Nine years ago, Luis was 7 times as old as Ashley. How old is Ashley now
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
4a - 9 = 7(a-9)
54 = 3a
18 = a, Ashley's age