SOLUTION: forty ounces of a 30% gold alloy are mixed with 60oz of a 20% gold alloy. Find the percent concentration of the resulting gold alloy

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Question 350207: forty ounces of a 30% gold alloy are mixed with 60oz of a 20% gold alloy. Find the percent concentration of the resulting gold alloy
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
Let X be the new concentration,
30%2840%29%2B20%2860%29=X%28100%29
1200%2B1200=100X
X=24
The new alloy is 24% copper.