Consider a hospital that has collected a lot of data for how long it takes to move patients that are in a stretcher throughout the hospital. The task of moving patients is assigned to Porters. The hospital's industrial engineer knows the following: It take a porter 1.5 seconds to move a stretcher 1 meter The average wait for the elevator is 5 seconds It takes 10 seconds to load and unload the elevator The elevators takes 12 seconds per floor to go up or down. Given this information, what method should be used to determine how long it takes to move a patients from the emergency department to an inpatient ward? Explain how you would apply this method.