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? 0.8(100 – x) + 0.6x = 100(0.65) 0.6(100 – x) + 0.8x = 100(0.65) 0.8(100) + 0.6x = 0.65(100 - x) 0.6(x) + 0.8(100 + x) = 0.65

step-by-step explanation:

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$9.89

step-by-step explanation:

9.90 = p x .06 x .25 (3/12 changed to a decimal)

9.90 = p x 0.015

9.90 - 0.015 = p

9.89 = p