in this problem, we are given a poll of students and their favorite cookies:
8 students - chocolate chip
5 students - peanut butter
3 student - oatmeal
4 students - sugar
We want to know what part of students have peanut butter as their favorite.
First, let's figure out how many students we have in total:

Now that we know how many students there are, we can set up our fraction in the following format:

So, that gives us:

This fraction can be reduced by dividing 5 from the numerator and denominator:

So, one fourth (1/4) of the students like peanut butter cookies the best.