SOLUTION: Jenna's Cousin is 3 times as old as Jenna was five years ago. If Jenna's Cousin is 24, how old is Jenna?

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Question 1084847: Jenna's Cousin is 3 times as old as Jenna was five years ago. If Jenna's Cousin is 24, how old is Jenna?
Answer by addingup(3677) About Me  (Show Source):
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C = 3(J-5)
24 = 3J-15
39 = 3J
J = 13