Mathematics, 05.11.2020 17:00 unknownyobutt21

Brass is made from a mixture of copper and other elements. A mixture that is 80% copper is combined with a mixture that is 60% copper, resulting in 100 pounds of brass that is 65% copper. Which equation can be used to find x, the amount of 60% mixture used to create the 65% mixture?

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Brass is made from a mixture of copper and other elements. A mixture that is 80% copper is combined...