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65-m.p.h. Speed Limits, Large Primes, and Japanese Exams (Math Chat)

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Visit this site: http://www.csmonitor.com/cgi-bin/getasciiarchive?script/97/06/13/061397.feat.scitech.1
Author:Frank Morgan; Christian Science Monitor
Description: When a state increases a highway speed limit from 55 to 65 miles per hour, by what percent does the road capacity (in cars per hour) change?
Levels: Middle School (6-8), High School (9-12)
Languages: English
Resource Types: Problems/Puzzles, Articles
Math Topics: Measurement, Prime Numbers

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