Answer:
The answer to your question is 191
Step-by-step explanation:
Data
Total number of students = 464
Students in a band = 89
Students in sports = 215
Students in both activities = 31
Students do not practice any activity = ?
Process
1.- Subtract 31 from the students in a band and students in a sport
89 - 31 = 58
215 - 31 = 184
2.- Add the previous results anfd the number of students that practice both activities
58 + 184 + 31 = 273
3.- Subtract 273 from the total number of students
464 - 273 = 191
4.- Conclusion
191 students are not involved in any activity.