# SOLUTION: A lab assistant is asked to mix a 30% alcohol solution with 21 liters of an 80% alcohol solution to make a 60% alcohol solution. How many liters of the 30% alcohol solution should

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 Question 474192: A lab assistant is asked to mix a 30% alcohol solution with 21 liters of an 80% alcohol solution to make a 60% alcohol solution. How many liters of the 30% alcohol solution should be used?Answer by ewatrrr(11176)   (Show Source): You can put this solution on YOUR website! ``` Hi, Let x represent the amount of the 30% solution MIXING .30x + .80*21L = .60(x+21L) .20*21L = .30x x = .20*23L/.3 = 14L, the amount of the 30% solution ```