SOLUTION: How much of a solution that is 20% alcohol should be added to 200 ounces of a solution that is 50% alcohol so that the resulting solution is 30% alcohol?

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Question 292208: How much of a solution that is 20% alcohol should be added to 200 ounces of a solution that is 50% alcohol so that the resulting solution is 30% alcohol?
Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
.2x+.5*200=.3*(200+x)
x=400