a metal alloy weighing 1 oz and containing 80% nickel is melted and mixed with 3 oz of pure nickel. what percent of the r

Question

a metal alloy weighing 1 oz and containing 80% nickel is melted and mixed with 3 oz of pure nickel. what percent of the r

Answer 1

Is part of this question missing?

Answer 2

Hi Steph,

 

The 1 0z sample of alloy containing 80% nickel has 0.8 oz of nickel. If you mix this melted alloy with 3 oz of pure nickel, you will have a 4-oz specimen containing 3.8 oz of nickel. The percentage of nickel in this new specimen is

 

100% * (3.8 oz)/(4.0 oz) = 95%