Note: These Challenge Questions coincide with the Spring 2003 Reports Date: Sun May 04 2003 - 22:33:34 EDT
The average number of robins seen (45+62+70 divided by 3) is 59.
Based on that number, there are 3540 robins flying overhead in an hour (59 X 60 minutes in an hour).
If William Bernard was counting robins in an area of the sky 200 yards across, and the actual robin front was one mile, 31,152 robins were flying by per hour. (There are 5280 feet in a mile divided by 3 feet in a yard equals 1760 yards in a mile. 1760 divided by 200 equals 8.8 200 yards in a mile. 8.8 X 3540 birds flying over head in an hour in a 200 yard space equals 31,152 robins flying in the space of a mile every hour.)
Iselin Middle School/grade 7A
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