SOLUTION: How much of an alloy that is 10% copper should be mixed with 400 ounce of an alloy that is 90% copper in order to get an alloy that is 30% copper

Question 1020061: How much of an alloy that is 10% copper should be mixed with 400 ounce of an alloy that is 90% copper in order to get an alloy that is 30% copper
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Let = ounces of 10% alloy needed
= ounces of copper in 10% alloy
= ounces of copper in 90% alloy
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1200 ounces of 10% alloy is needed
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check:

OK
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