Question

How do I get the out number to 30?

Answer 1

Notice the pattern of the out bags. For every person after the first, three more bags are pulled. By continuing this pattern you will eventually find the answer

1=2
2=5
3=8
4=11
5=14
6=17
7=20
8=23
9=26
10=29
11=32

Therefore, you need 11 people to get the job done in one day