SOLUTION: How many pounds of 20% copper alloy must be mixed with 600 lb. of a 30% copper alloy to make a 27.5% copper alloy? (must show alg)

Algebra ->  Customizable Word Problem Solvers  -> Mixtures -> SOLUTION: How many pounds of 20% copper alloy must be mixed with 600 lb. of a 30% copper alloy to make a 27.5% copper alloy? (must show alg)       Log On