SOLUTION: Here is my problem. Its hard.
Pure copper was mixed with a 10% copper alloy to produce an alloy that was 25% copper. How much of the pure copper and how much 10% alloy were used
Algebra.Com
Question 565237: Here is my problem. Its hard.
Pure copper was mixed with a 10% copper alloy to produce an alloy that was 25% copper. How much of the pure copper and how much 10% alloy were used to produce 36kg of 25% alloy?
Answer by scott8148(6628) (Show Source): You can put this solution on YOUR website!
(100%)(x) + (10%)(36 - x) = (25%)(36)
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