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? a. 18 kilometers b. 9 kilometers c. 4.5 kilometers d. 3.3 kilometers

Explanation:

Step1: Convert time to hours

30 minutes is $\frac{30}{60} = 0.5$ hours.

Step2: Use speed formula to find distance

Speed $v = \frac{\text{distance}}{\text{time}}$, so distance $d = v\times t$. The speed $v$ is 9 km/h, time $t = 0.5$ h. Then $d = 9\times0.5 = 4.5$ kilometers.

Answer:

C. 4.5 kilometers