SOLUTION: 2 solutions a% b% alcohol by volume are mixed to make an x liters solution which is c% alcohol by volume. If A<c<b then how many liters of a% was used?

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Question 892549: 2 solutions a% b% alcohol by volume are mixed to make an x liters solution which is c% alcohol by volume. If A
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
Putting directly into initial formula equations can be this way:

Let u = how much of the a%
Let v = how much of b%

highlight_green%28%28au%2Bbv%29%2Fx=c%29 and highlight_green%28u%2Bb=x%29;
Solve the system for u and v.

Study this as a lesson which corresponds to the question you asked:
Mixing two concentrations for known amount of mixture - http://www.algebra.com/tutors/Mixtures%3A-All-in-Symbols.lesson?content_action=show_dev