Discussion

Further to the example on slide #27,  passenger 1 begins being served by the passport control inspector immediately. His service time is 1:30 (90 seconds) at which time he goes immediately to the baggage inspector who waves him through without inspection. Passenger 2 begins service with passport inspector 1:30 minutes (90 seconds) after arriving there (as this is when passenger 1 is finished) and requires 1:00 minute (60 seconds) for passport inspection. He is waved through baggage inspection as well. This process continues in this manner. 

Predict  a mathematical relationship of a increase of 10 seconds in service and the length of time it will take to clear the first 10 passengers

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