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?
How many students are in music? ** There are 400-120-200=<<400-120-200=80>>80 students in music.
What percentage of students take music? ** Thus, students in music make up (80/400)*100=<<80/400*100=20>>20% of the students.
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