Answer:
Okay so by the looks of it you need to know how many people aren't in anything.
Step-by-step explanation:
110 + 240 = 350
450 - 350 = 100
100 - 60 = 40
So 40 students are in nothing. But you probably need to know how many students are in band. I would guess around 30 students are in band.
I hope this helped if it didn't I'm sorry.
