Algebra By volume, one alloy is 70% copper, 20% zinc, and 10% nickel. A second alloy is 60% copper and 40% nickel. A third alloy is 30% copper, 30% nickel, and 40% zinc. How much of each alloy (in mm^3) must be mixed in order to produce 1000 mm^3 of a final alloy that is 50% copper, 18% zinc, and 32% nickel?