The number of people seated in each section is 55.
Explanation
Suppose, the number of people seated in each section is [tex]x[/tex]
As, the same number of people are seated in each of the 5 different sections, so the total number of people seated in all those 5 sections [tex]=5x[/tex]
Given that, there are 275 people in the movie theater. So, the equation will be....
[tex]5x=275\\ \\ x=\frac{275}{5}=55[/tex]
So, the number of people seated in each section is 55.