Customers walk into a bank and are served at an average rate of 20 per hour. One average there are 5 people waiting in queue to be served. How long does the average customer wait in queue?

Name: Customers walk into a bank and are served at an average rate of 20 per hour. One average there are 5 people waiting in queue to be served. How long does the average customer wait in queue?
Brand: Quizplus
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Question

Quizplus · Accepted Answer

The Answer is Throughput R = 20 per hour,
Inventory I = 5
Waiting time in queue T = I/R = 5/20 = 0.25 hours = 15 minutes.

Customers Walk into a Bank and Are Served at an Average