1. Problem 8.3
John Doe has promised a total service time of 20 minutes. Processing time at the oven = 15 min
Preparation = 2 min
At most 3 minutes waiting time before the pizza has to be given away for free.
Ri = 20 per hour.
c = 5 ovens (each with a capacity of 60/15 = 4 pizzas /hr
Rp = 20  no safety capacity.
Any variability in arrival rate (or service time) will lead to a build up of queues and waiting time in excess of 3 minutes, resulting in John giving up many free pizzas.
The potential partner should:
a) get John to buy more ovens
b) get out of the business
c) stop giving the service guarantee.