Answer:
about 465 students do not prefer non-fiction
Explanation:
first I labeled each section on the pie the
the blue area looks like the smallest so that's most likely 60 students
then orange is 75 students
dark blue is the biggest so its 180 students
gray and yellow are the last ones left and gray is bigger than yellow so gray is 150
the number of students that prefer non-fiction is 100 so you add all the other number to get how many students don't prefer non-fiction=465
I hope this helps and makes sense ;D