# Roman mixes 12 litres of 8% acid solution with a 20% acid solution, which results in a 16% acid solution. How do you find the number of litres of 20% acid solution in the new mixture?

##### 1 Answer

Dec 31, 2016

The volume of 20 % acid is 24 L.

#### Explanation:

We can use the "volume × concentration" formula to work out the answer.

Let

Then

We can write

∴ The volume of 20 % acid is 24 L.