An athlete can run 9 kilometers in 1 hour. If the athlete runs at that same average speed for 30 minutes, how far will the athlete travel?
A 18 kilometers
B 9 kilometers
C 4.5 kilometers
D It travels right at an increasing speed.
C 4.5 kilometers
In 30 minutes (half an hour), the athlete will cover half the distance he can cover in one hour, which is 4.5 kilometers (9 kilometers divided by 2).