Ron ran 450 meters round a track in 3 minutes. What was his average running speed in km/h?

450/3 = 150 m/minute

150 * 9,000 m/h

9,000 m/h = 9 km/h

150 * 60 = 9,000 m/h

To calculate Ron's average running speed in km/h, we need to convert the distance and time into the appropriate units.

1. Convert the distance from meters to kilometers:
There are 1000 meters in a kilometer, so we divide 450 meters by 1000:
450 meters ÷ 1000 = 0.45 kilometers

2. Convert the time from minutes to hours:
There are 60 minutes in an hour, so we divide 3 minutes by 60:
3 minutes ÷ 60 = 0.05 hours

3. Calculate the average running speed:
Average Speed = Distance / Time
Average Speed = 0.45 kilometers / 0.05 hours
Average Speed = 9 kilometers per hour

Therefore, Ron's average running speed is 9 km/h.