SOLUTION: A 20 oz. Alloy of platinum that costs $220 per ounce is mixed with an alloy that costs $400 per ounce. How many ounces of the $400 alloy should be mixed with the 20 oz. Alloy to ma

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Question 371797: A 20 oz. Alloy of platinum that costs $220 per ounce is mixed with an alloy that costs $400 per ounce. How many ounces of the $400 alloy should be mixed with the 20 oz. Alloy to make an alloy that costs $300 per ounce?
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!

Let A be the amount of $400 alloy.
400A%2B220%2820%29=300%28A%2B20%29
Divide both sides by 100,
4A%2B44=3A%2B60
A=60-44
highlight%28A=16%29ounces