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How much of an alloy that is 20% copper should be mixed with 200 ounces of an alloy that is 60% copper in order to get an alloy that is 30% copper? Will give Brainly

Sagot :

Answer:

600 ounces of 20% alloy of copper

Step-by-step explanation:

let the amount be x ounces,

.

20% of x+60% of 200 ounces=30% of (x+200) ounces

[tex]\frac{20x}{100} +\frac{60*200}{100} =\frac{30(x+200)}{100} \\20x+12,000=30x+6,000\\divide~by~10\\2x+1200=3x+600\\3x-2x=1200-600\\x=600[/tex]

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