# SOLUTION: An alloy weighing 20 lbs is 30% copper. How many pounds of another alloy, which is 80% copper must be added for the final alloy t be 60% copper. could you please help me with th

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 Question 121444: An alloy weighing 20 lbs is 30% copper. How many pounds of another alloy, which is 80% copper must be added for the final alloy t be 60% copper. could you please help me with the set up of the equation for this problem to help me solve it. thank youAnswer by ankor@dixie-net.com(15746)   (Show Source): You can put this solution on YOUR website!An alloy weighing 20 lbs is 30% copper. How many pounds of another alloy, which is 80% copper must be added for the final alloy t be 60% copper. : Let x = amt of 80% copper alloy must be added: : The equation: .30(20) + .80(x) = .60(x+20)