A) Given that all people work at the same steady rate and 6 people stuff flyers in 5 minutes, then 12 (=2*6) people will need 2.5 (=5/2) minutes, 30 (=5*6) people will need 1 (=5/5) minutes, etc. Then, the relationship is inverse.
The formula that relates the variables is:
people = k/time
Replacing with people = 6 and time = 5, we get.
6 = k/5
6*5 = k
k = 30
For 5 people:
5 = 30/time
time = 30/5
time = 6 minutes
people | time
5 | 6
6 | 5
12 | 2.5
30 | 1