Answer:
Sean's office is 8ft bigger than Beth's office.
Explanation:
If you multiply 8 by 5 you get 40 which is how big Sean's office is.
If you multiply 4 by 8 you get 32 which is how big Bth's office is.
Then you subtract 40-36 you get 8 which is the difference between Sean and Beth's offices.
Hope that helped! :)