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.

Algebra ->  Customizable Word Problem Solvers  -> Travel -> 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.      Log On

Ad: Over 600 Algebra Word Problems at edhelper.com


    

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) About Me  (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 * 1%2F4=15kmh