SOLUTION: A container is filled with 70 liters which is 40% alcohol by volume. How much of a mixture must be taken and then replaced with equal amount of water so that the resulting solution

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Question 1165932: A container is filled with 70 liters which is 40% alcohol by volume. How much of a mixture must be taken and then replaced with equal amount of water so that the resulting solution is 30% alcohol by volume?
Answer by ikleyn(52787) About Me  (Show Source):
You can put this solution on YOUR website!
.

See a TWIN problem solved under this link

https://www.algebra.com/algebra/homework/word/mixtures/Mixture_Word_Problems.faq.question.1165827.html

https://www.algebra.com/algebra/homework/word/mixtures/Mixture_Word_Problems.faq.question.1165827.html


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It is a standard and typical mixture problem.

In this site, there is a bunch of lessons,  covering various types of mixture problems.  See introductory lessons
    - Mixture problems
    - More Mixture problems
    - Solving typical word problems on mixtures for solutions
    - Word problems on mixtures for antifreeze solutions (*)
    - Word problems on mixtures for alloys
    - Typical word problems on mixtures from the archive

Of these lessons, the closest solutions to your problem you will find in the lesson marked (*) in the list.

Read the lessons and become an expert in solution the 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 online textbook 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.