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Pro Problems > Math > Algebra > Equations > Systems of Equations > Word Problems > Money

A boy is selling lemonade at x cents per glass. His cost is y cents per glass. On Monday he sold 75 glasses of lemonade, and his profit was \$9.00. On Tuesday his mother agreed to pay half of his expenses. He sold 100 glasses of lemonade, and made a profit of \$14.00. How much was he charging per glass?

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Problem by Mr. Twitchell

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