anonymous
  • anonymous
I medal! :> 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
Mathematics
schrodinger
  • schrodinger
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anonymous
  • anonymous
A makes the most sense
anonymous
  • anonymous
Thanks so much! Everyone has been ignoring my post TT^TT

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