Answer: 30
Explanation:
Information given: 1 hour = 6 tables. 
5 hours = ?? tables.
To figure this out we need to use multiplication.
 6
 x 5
 _______
 ?
If you can set up 6 tables an hour, in 5 hours you can set up 30.
6 tables times 5 hours is 30.
6 x 5 = 30.