Question
9.2 The supervisor at the American airline check-in counter observes the following process characteristics: all the agents can, together, complete checking in 100 customers per hour on average; there are, on average, 36 customers either waiting in line or being helped by an agent for check-in Q: how much time, on average, does each customer have to spend in the check-in area? 9.3 The supervisor at the American airline check-in counter observes the following process characteristics: there are, on average, 20 customers either walting in line or being help by an agent for check-in, the average amount of a passenger spends on check-in is 16 minutes from start to end : a) How many passengers can American Airlines complete checking them in per hour? bj How often does one passenger complete check-in and exit the area? 9.11 Stanford Rosenberg Computing wants to establish an assembly line for producing a new product, the Personal Digital Assistant (PDA). The tasks, task times, and immediate predeces sors for the tasks are as follows: sors ot the tasks are as
Explanation / Answer
Time taken by each customer = *Capacity) /(no of customers waiting or being serviced)
9.2
Available capacity (B) - 100 customers per hour = 1.66 customers per minutes
Number of customers waiting/being serviced at any time - (A) 36
Time taken for each customers = B/A = 36/1.66 = 21.60 minutes
9.3
Customer waiting at any time (A) = 20
time a passenger spends inc heck in (B) - 16 minutes = 0.27 hrs
Capacity to handle = (A) = A/B = 20/0.27 = 74.07 passengers per hour
How often does a passenger leave - 74 passengers leave in 60 minutes so one passenger leave every (60/74) minutes = 0.81 minutes