Question

there are 342 seats in the Jefferson middle school auditorium. There are 75 seats being used by teachers. Students are using 2/3 of the seats. How many are not being used in the auditorium?

Answer 1

267 i think. I might have counted wrong

Answer 2

39 seats are not being used in the auditorium.

Explanation:

We have bee given the total number of seats:

In middle school auditorium are 342

Seats used by teachers are 75

And seats used by students are
`(2)/(3)\text{of the seats}`

And
`(2)/(3)\cdot 342=228`seats used by students

That means 228+75=303 seats are used

We need to calculate seats not being used which is equal to

Total seats minus seats used =342-303 =39 seats remain unused.