SOLUTION: The second-place winner in a 21-kilometer race finished the race with a time of 1 hour and 45 minutes. What was the runner's average speed?
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Question 1146726: The second-place winner in a 21-kilometer race finished the race with a time of 1 hour and 45 minutes. What was the runner's average speed?
Answer by rothauserc(4718) (Show Source): You can put this solution on YOUR website!
rate * time = distance
:
rate = distance/time
:
1 hour and 45 minutes = 1.75 hours
:
rate = 21/1.75 = 12
:
The runner's average speed is 12 kilometers/hour
:
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