Initially, the mixture has 8 parts water and 2 parts salt. This gives us a total of \( 8 + 2 = 10 \) parts.
When we add one part of water and one part of salt, we increase the amounts as follows:
- New amount of water = \( 8 + 1 = 9 \) parts
- New amount of salt = \( 2 + 1 = 3 \) parts
Now, we can find the new ratio of salt to water:
\[ \text{Ratio of salt to water} = \frac{\text{salt}}{\text{water}} = \frac{3}{9} \]
Simplifying \( \frac{3}{9} \) gives us:
\[ \frac{3}{9} = \frac{1}{3} \]
However, if we consider the ratio in a different way, salt to water can be represented in the terms asked. If we state it as "salt to water," it would be expressed using 3 parts of salt and 9 parts of water.
Thus, the current ratio of salt to water in its simplest form can also be presented as \( 3:9 \).
Therefore, the correct answer is 3 to 9.
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