and add a new checkout, Fast Checkout, that shoppers with a service time of less than 5 minutes will always use; those with service times that are 5 minutes or more will choose from the original three checkout lanes according to the same rules as in Exercise 4-32. On the basis of only average and maximum total time in the system (since the individual checkout lanes are no longer comparable with the added Fast Checkout lane here), compare your results here to those from both Exercises