SOLUTION: A chemist need 12L of a 40% alcohol solutions. She mix a 20% solution and a 50% solution. How many liters of each will be required to obtain what she needs?

SOLUTION: A chemist need 12L of a 40% alcohol solutions. She 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 793362: A chemist need 12L of a 40% alcohol solutions. She mix a 20% solution and a 50% solution. How many liters of each will be required to obtain what she needs?
Answer by josgarithmetic(39617) (Show Source): You can put this solution on YOUR website!
x Liters of 20% solution
y Liters of 50% solution
WANTED 12 Liters of 40% solution

and
Solve for x and y.
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