Answer:
average speed: 20.5km/h
Explanation:
The following question is missing:
What was the average speed of the record-setting runner in km/h?
To answer this, first convert 3 minutes into hours. We know that 60 minutes make an hour, using this conversion factor we get:
3 minutes * (1 hour/60 minutes) = 0.05 hours
Next add this result to the 2 hours:
2 hours and 3 minutes = 2 h + 0.05 h = 2.05 hours
The average speed is obtained dividing the distance traveled by the time elapsed:
42 km/2.05 hours ≈ 20.5km/h
