SOLUTION: in 18 years jenny will be three times as old as she is now. How old is she?

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Question 369445: in 18 years jenny will be three times as old as she is now. How old is she?
Answer by robertb(5830) About Me  (Show Source):
You can put this solution on YOUR website!
Let j = age now.
Then 3j = j +18.
2j = 18,
j = 9.