Question 7a
Sharp Discount Wholesale Club has two service desks, one at each entrance of the store. Customers arrive at each desk at an average of one every six minutes. The service rate at each desk is four minutes per customer.



a)	How often (what percent of the time) is each service desk idle? 33.33%
b)	What is the probability that both service desks are busy?
c)	What is the probability that both service desks are idle?
d)	How many customers, on average, are waiting in line in front of each service desk?
e)	How much time does a customer spend at each service desk in total?