<PRE><B>Question 474898</B>
First day Officer Fog processes 16 passengers every 40 minutes.
Second day Officer Fog processed 18 passengers every 40 minutes.
4 hours * 60 = 240 minutes.
240 minutes / 40 minutes = 6.
In 4 hours, there are 6 40 minute periods.
First day Officer Fog processes 6 * 16 = 96 passengers in a 4 hour period.
Second day Officer Fog processes 6 * 18 = 108 passengers in a 4 hour period.
Total passengers processed in 8 hours is equal to 204.
Average number of passengers processed in each 4 hour period is equal to 204/2 = 102.
That should be your answer.

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