Sharp Discounts Wholesale club has two service bureaus one at each entrance of the store. Customers attain at each service desk at an average of one every six minutes. The service rate at every service desk is four minutes per customer.

a) Explain what percentage of time is every service desk idle?

b) Explain what is the probability that both desks are busy? Idle?

c) Explain how many customers, on average, are waiting in line?

d) Explain how much time does a customer spend at the service desk? (Waiting plus service time)

e) Must Sharp Discounts consolidate its two service desks?