SOLUTION: How many gallons of pure alcohol should be mixed with 20 gallons of 15% alcohol solution to obtain a mixture that is 25% alcohol?
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Question 213620: How many gallons of pure alcohol should be mixed with 20 gallons of 15% alcohol solution to obtain a mixture that is 25% alcohol?
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Let = gallons of alcohol to be added
In words:
(original alcohol + added alcohol)/(total mixture) = 25%
2.67 gallons of alocohol must be added
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