Question

A campus deli serves 250 customers over its busy lunch period from 11:30 a.m. to 1:30 p.m. A quick count of the number of customers waiting in line and being served by the sandwich makers shows that an average of 9 customers are in process at any point in time. What is the average amount of time that a customer spends in process

Answer 1

2 mins brief douxv six