1. The problem states that pink paint is made by mixing red and white paint in a 2 : 3 ratio. 2. This means for every 2 parts of red paint, there are 3 parts of white paint. 3. The total parts of the mixture are $2 + 3 = 5$ parts. 4. To find the fraction of the mixture that is red paint, divide the red parts by the total parts. 5. So, the fraction of red paint is $\frac{2}{5}$. 6. This means that $\frac{2}{5}$ of the pink paint mixture is red paint.