SOLUTION: How many liters of a 10% alcohol solution and how many liters of a 20% alcohol solution must be mixed together to make 10 L of a 12% alcohol solution?

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Question 720227: How many liters of a 10% alcohol solution and how many liters of a 20% alcohol
solution must be mixed together to make 10 L of a 12% alcohol solution?

Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
x volume of L concentration solution and y volume of H concentration solution must be mixed together to make M volume of T concentration solution. What is x and what is y?

Unknowns are x and y. All other variables are known.

%28Lx%2BHy%29%2FM=T and x%2By=M. Find x and y.