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How much of an alloy that is 40% copper should be mixed with 500 ounces of an alloy that is 70% copper in order to

get an alloy that is 60% copper?
☐ounces

User Raychz
by
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1 Answer

4 votes

Answer:

250 ounces of 40% percent copper alloy

Explanation:

Let a be the number of ounces of 40% copper alloy.


.4a + .7(500) = .6(500 + a)


.4a + 350 = 300 + .6a


.2a = 50


2a = 500


a = 250

250 ounces of 40% copper alloy.

User Gurminder Singh
by
7.5k points

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