Final answer:
To calculate average running speed, divide the distance traveled by the time taken. In this case, Bill ran 10.5 km in 32 minutes, giving an average running speed of 19.8 km/h.
Step-by-step explanation:
To calculate average running speed, we need to divide the distance traveled by the time taken. In this case, Bill ran 10.5 km in 32 minutes. To convert the time from minutes to hours, we divide by 60, which gives us 0.53 hours. Now we can calculate the average running speed by dividing the distance of 10.5 km by the time of 0.53 hours.
The average running speed of Bill would be 19.8 km/h.