Question

There are 250 students taking either band or chorus. If there are 180 students taking band and 60 students in both band and chorus, how many students are in just chorus? The answer choices are 10, 60, 70, and 120, help please

Answer 1

bt=180
Band only equals
bt−60

Chorus total equals
ct
Chorus only equals
ct−60

Band and Chorus equals
bc=60


So band only + chorus only + band and chorus equals 250 students.
(180−60)+60+(ct−60)=250
Which becomes
ct=130
So chorus only equals 130-60=70 students