SOLUTION: Chemist needs 18 L of a 40% alcohol solution. She must mix a 20% solution and a 50% solution. How many liters of each will be required to obtain what she needs?

SOLUTION: Chemist needs 18 L of a 40% alcohol solution. She must mix a 20% solution and a 50% solution. How many liters of each will be required to obtain what she needs?

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Question 806467: Chemist needs 18 L of a 40% alcohol solution. She must mix a 20% solution and a 50% solution. How many liters of each will be required to obtain what she needs?
Answer by richwmiller(17219) (Show Source): You can put this solution on YOUR website!
.4*18=.2x+.5y,
x+y=18
x=6., y=12.
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