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QUESTION
for the first 3 hours of the trip susan drove at 50 miles per hour. Then because of the construction delays, she drove at only 40 miles per hour for...
for the first 3 hours of the trip susan drove at 50 miles per hour. Then because of the construction delays, she drove at only 40 miles per hour for the next 2 hours. what was her average speed, in miles per hour, the entire trip?
