SOLUTION: How many liters of alcohol must be added to 40 liters of a mixture which is 65% alcohol to obtain a mixture which is 80% alcohol?

SOLUTION: How many liters of alcohol must be added to 40 liters of a mixture which is 65% alcohol to obtain a mixture which is 80% alcohol?

Algebra.Com

Question 920388: How many liters of alcohol must be added to 40 liters of a mixture which is 65% alcohol to obtain a mixture which is 80% alcohol?
Answer by ewatrrr(24785) (Show Source): You can put this solution on YOUR website!
.65(40L) + x = .80(40L + x)
x = .15(40L)/.20
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