# Joy is preparing 13 liters of a 20% saline solution. She only has 30% and 10% solution in her lab. How many liters of the 30% and how many liters of the 10% should she mix to make the 20% solution?

##### 1 Answer

Aug 8, 2018

#### Answer:

The volume of

#### Explanation:

Make a material balance with respect to the saline solution

Let the volume of

Then,

The volume of

So,

Solving this equation for

The volume of