Answer:
average 9.6 to 10 customers daily
Step-by-step explanation:
I'm assuming you want to know how many MORE customers than 8 you must talk with to increase your daily numbers by 20%.
If this is the case, the following approach is appropriate:
1.20(8) = 9.6
You'll need to talk to an average of 9.6 to 10 customers daily.