Mandy is twice as old as Jessica. Three years ago, Mandy was three times as old as Jessica was then. What are the ages of the girls?
(1) Mandy is 3 and Mandy is 6.
(2) Mandy is 6 and Jessica is 3.
(3) Mandy is 6 and Jessica is 12.
(4) Mandy is 12 and Jessica is 6
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