SOLUTION: How much of an alloy this is 20% should be mixed with 500 ounces of alloy that is 80% copper in order to get and alloy that is 30% copper?
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Question 632119: How much of an alloy this is 20% should be mixed with 500 ounces of alloy that is 80% copper in order to get and alloy that is 30% copper?
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Let = ounces of 20% alloy needed
= ounces of copper in ounces
ounces of copper in 80% alloy
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2500 ounces of 20% alloy are needed
check:
OK
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