SOLUTION: I sell salads and juices. Salads are 3.00$ and Juices are 2.50$. I earned 216$ by selling 80 items. How many juices did I sell?

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Question 781145: I sell salads and juices. Salads are 3.00$ and Juices are 2.50$. I earned 216$ by selling 80 items. How many juices did I sell?
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Solve the 2X2 system. Report the value of

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