SOLUTION: Helen is now 40 years old and arlene is 20 years old.How many years ago was Helen three times as old as Arlene was then.
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Question 32855: Helen is now 40 years old and arlene is 20 years old.How many years ago was Helen three times as old as Arlene was then.
Answer by Paul(988) (Show Source): You can put this solution on YOUR website!
Helen is 40 years old
Arlene is 20 years old.
TO determine: thrice the age of Arlene.
Eqaution:
3(20-x)=40-x
-3x+60=40-x
-2x=-20
x=10
Hence, 10 years ago, she was thrice as old as her.
Paul.
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