SOLUTION: A cross country skier reaches the 13-km mark of a race 40 min after reaching the 3-km mark. Find the speed (average rate of change) of the skier.
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Question 884865: A cross country skier reaches the 13-km mark of a race 40 min after reaching the 3-km mark. Find the speed (average rate of change) of the skier.
Answer by JulietG(1812) (Show Source): You can put this solution on YOUR website!
The difference between 13km and the 3km mark is 10km.
He travels 10km in 40 minutes.
That's 1 km per 4 minutes.
60 minutes in an hour.
60 * =15kmh
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