Question

Consider the baggage check-in of a small airline. Check-in data indicate that from 9 a.m. to 10 a.m., 255 passengers checked in. Moreover, based on counting the number of passengers waiting in line, airport management found that the average number of passengers waiting for check-in was 35. How long did the average passenger have to wait in line?

Answer 1

AVG INVENTORY = 35 passenger (the units is simply passenger)

AVG FLOW RATE = 255 Passengers/Hour

Avg Flow Time =
Avg Inventory/Avg Flow Rate

35/255 = .137 hours * 60 Mins = 8.24 mins

Hence, there would be passengers waiting in the line.