SOLUTION: Suppose you mix 1L of a 20% acid solution with 2L of a 50% acid solution. What is the concentration of acid in the final mixture?

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Question 1124593: Suppose you mix 1L of a 20% acid solution with 2L of a 50% acid solution. What is the concentration of acid in the final mixture?
Answer by ikleyn(52781) About Me  (Show Source):
You can put this solution on YOUR website!
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The final concentration is


    %280.2%2A1+%2B+0.5%2A2%29%2F%281%2B2%29 = 1.2%2F3 = 0.4 = 40%.

The numerator is the volume of the pure alcohol in the mixture in liters;

the denominator is the total liquid volume.

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For introductory lessons covering various types of mixture word problems see
    - Mixture problems
    - More Mixture problems
    - Solving typical word problems on mixtures for solutions
    - Typical word problems on mixtures from the archive
in this site.

You will find there ALL TYPICAL mixture problems with different methods of solutions,
explained at different levels of detalization,  from very detailed to very short.

Read them and become an expert in solution mixture word problems.

Also,  you have this free of charge online textbook in ALGEBRA-I in this site
    - ALGEBRA-I - YOUR ONLINE TEXTBOOK.

The referred lessons are the part of this textbook in the section "Word problems" under the topic "Mixture problems".


Save the link to this online textbook together with its description

Free of charge online textbook in ALGEBRA-I
https://www.algebra.com/algebra/homework/quadratic/lessons/ALGEBRA-I-YOUR-ONLINE-TEXTBOOK.lesson

to your archive and use it when it is needed.