SOLUTION: A chemist has two solutions of  HCl.   One has a 40% concentration and the other has a 25% concentration. How many liters of each solution must be mixe

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Question 972650: A chemist has two solutions of 
HCl. 
 One has a 40% concentration and the other has a 25% concentration.
How many liters of each solution must be mixed to obtain 
57 
liters of a 
36% 
solution?

Answer by josgarithmetic(39617)   (Show Source): You can put this solution on YOUR website!
This explains everything:
http://www.algebra.com/my/Mixtures%3A-All-in-Symbols.lesson?content_action=show_dev

Can you find a way to do this in ONE variable only?

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