18 kilometers 9 kilometers 4.5 kilometers 3.3 kilometers
I gave my students this multiple choice question: 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?

Only one answer is correct among these 4 choices:
- 18 kilometers
- 9 kilometers
- 4.5 kilometers
- 3.3 kilometers

Could you tell me which one is correct?

4.5 kilometers