Answer:-Jess will serve any 6 guests.
Explanation:-
Total guests attending a party =111
Number of servers=15
As each server has the same number of guests to serve, divide total guests by number of servers, we get
111÷15
We know that 15×7=105
Now, 111-105=6....> remainder=6 and quotient=7
Thus, Jess will serve any 6 guests.