To find the ratio that compares the number of students who prefer a visual learning style to the total number of student-participants, we first need to calculate the total number of students surveyed.
The number of students who prefer each learning style is given as follows:
- Auditory: 17
- Visual: 20
- Kinesthetic: 13
Now, let's calculate the total number of students:
\[ \text{Total students} = 17 + 20 + 13 = 50 \]
Next, we set up the ratio of students who prefer visual learning to the total number of students:
\[ \text{Ratio} = \frac{\text{Number of students who prefer visual}}{\text{Total number of students}} = \frac{20}{50} \]
To simplify this fraction:
\[ \frac{20}{50} = \frac{2}{5} \]
Thus, the ratio in simplest fraction form is:
\(\frac{2}{5}\)