	A solution of vinegar and water contains 2 liters  of vinegar and 6 liters of  water. How much pure vinegar must be added to this solution so that the resulting solution will be  2/5 vinegar.

Let's solve this problem step by step.

### Step 1: Define the variables
Let \( x \) be the amount of pure vinegar that needs to be added.

### Step 2: Write down the initial information
- The current amount of vinegar in the solution is 2 liters.
- The current

Learn how to calculate the amount of pure vinegar needed to achieve a 2/5 vinegar solution from a mixture containing 2 liters of vinegar and 6 liters of water. This problem involves applying algebraic concepts and solving equations related to mixtures and solutions. Suitable for students in Grades 7-9.

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