Question 1020694
.
How Many Gallons of a 5% salt solution must be mixed with 200 gallons of a 10% solution to obtain a 9% solution?
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~


<pre>
It is a typical mixture word problem.

See the lesson <A HREF=http://www.algebra.com/algebra/homework/word/mixtures/Solving-typical-mixture-problems.lesson>Solving typical word problems on mixtures for solutions</A> in this site, Problem 1.

This problem is very similar to yours.

In this lesson you will find the detailed solution. 

Consider it as a sample. Read it attentively.

Then solve your problem by substituting your data.

In this way you will learn how to solve problems like this, once and for all.
</pre>