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The average of Amy's, Ben's, and Chris's ages is 9. Four years ago, Chris was the same age as Amy is now. In 3 years, Ben's age will be of 2/3 of Amy's age at that time. How many years old is Chris now?

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 Mar 16, 2020
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https://web2.0calc.com/questions/please-help-must-get-dinner

 Mar 16, 2020

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