prompt: There are 400 students. 120 students take dance as their elective. 200 students take art as their elective. The rest take music. What percentage of students take music?
messages.content: There are 400 students. 120 students take dance as their elective. 200 students take art as their elective. The rest take music. What percentage of students take music?
messages.role: user
messages.content: There are 400-120-200=<<400-120-200=80>>80 students in music.
  Thus, students in music make up (80/400)*100=<<80/400*100=20>>20% of the students.
  #### 20
messages.role: assistant