Please helppp I don’t get it at all

I have provided the filled out table so you can follow along
All you need to do is fill in the table following the question
First we have 200 students in total which you can see at the bottom right of the table
We have 170 students that enjoy music so put that as the total that enjoy music
155 enjoy reading as well so put in the enjoy music and enjoy reading section 155
Then we are left with the enjoy music and don’t enjoy reading section
We know that 170 enjoy music so if we take away the students that also enjoy reading
170 - 155
We get the students that like music but don’t like reading
= 15
Now 5 students don’t like music or reading so put 5 in that section
We need to find don’t enjoy music but enjoy reading
We know that the total students is 200 and total that enjoy music is 170
So 200 - 170 = 30 total student that don’t like music
So if there are 30 student that don’t like music and 5 also enjoy reading then 30 - 5 = 25 students that don’t like music and also donut like reading
Now just put the total for enjoy reading and don’t enjoy reading and done
I have provided the filled out table so you can follow along
If you need help with the second part just ask me