SOLUTION: An alloy is a mixture of metals. Suppose that a certain alloy is made by mixing 140 grams of an alloy that contains 64% copper with 180 grams of pure copper. Answer the questions b

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Question 1123259: An alloy is a mixture of metals. Suppose that a certain alloy is made by mixing 140 grams of an alloy that contains 64% copper with 180 grams of pure copper. Answer the questions below. Do not do any rounding.
A. How many grams of copper are in the resulting mixture?
B. What percentage of the resulting mixture is copper?
Answer by Boreal(15235) About Me  (Show Source):
You can put this solution on YOUR website!
140*0.64+180
89.6+180=269.6 gm.
the mixture is 320 gm, 84.25% copper.