Question 1207792
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2. How much water should be added to 64 ounces of a 10% salt solution to make a 2% salt solution?
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<pre>
Let V be the final volume of the mixture.


The mass of the dissolved salt is the same (it is not changed).

It leads to equation


    0.1*64 = 0.02*V


which gives  V = {{{(0.1*64)/0.02}}} = {{{(0.1/0.02)*64}}} = 5*64 = 320 ounces.


It means that 320-64 = 256 ounces of water should be added.    <U>ANSWER</U>
</pre>

Solved.


To see many other similar &nbsp;(and different) &nbsp;problems of the same type 
on dilution acid solutions by adding water, &nbsp;look into the lesson

&nbsp;&nbsp;&nbsp;&nbsp;- <A HREF=https://www.algebra.com/algebra/homework/word/mixtures/Special-type-mixture-problems-on-DILUTION-adding-water.lesson>Special type mixture problems on DILUTION adding water</A>

in this site.



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I just asked you once, &nbsp;and I repeat it again:


&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;- please do not pack more than one problem per post.


It is the rule and the policy of this forum:

<H3>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;One and only one problem per post.</H3>


This rule is printed at web-page


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from which you post your problems to this forum.



So, it is assumed that you read it before you post, are familiar with it and follow this rule.



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I saw, that you just re-posted first problem in a separate post.


I welcome this and approve this your action.


At the same time, I delete this first problem so that other tutors do not worry in vain.