The music department needs to secure buses for a field trip. Listed below are the total of participants in each of the band, choir, and orchestra.

• 60 students play in the band.                                                  
  
• 70 students sing in the choir.
  
• 50 students play in the orchestra.
  
• 12 students are in the band and orchestra.
  
• 10 students are in the band and choir.
  
• 5 students are in the choir and orchestra.
  
• 3 students are in the band, choir, and orchestra
  

students