1. Billy’s Hamburger Barn has a single drive-up window.
Currently, there is one attendant at the window who takes
the order (30–40 seconds), gathers up the food and bags
it (30–120 seconds), and then takes the customer’s money
(30–40 seconds) before handing the food to the customer.
a. (**) Map the current process. What is the minimum
cycle time? The longest cycle time?
b. (***) Suppose Billy’s Hamburger Barn redesigns the
process described in problem 11 so there are now two
attendants. The first attendant takes the order. Once
this step is finished, the first attendant then takes the
money, and the second one gathers up and bags the
food. If two of the process steps can now run in parallel (gathering the food and taking the money), what
is the new minimum cycle time? What is the longest
cycle time? What potential problems could arise by
splitting the process across two individuals?