Final answer:
Ezra jogged at a speed of 12 kilometers per hour, calculated by dividing the distance by the time. The provided answer is reasonable and has been simplified to a whole number.
Step-by-step explanation:
The question asks us to calculate Ezra's jogging speed in kilometers per hour. In order to find his speed, we divide the distance he jogged by the time it took him. Ezra jogged 5 kilometers in 5/12 of an hour. The speed is calculated as follows:
- Speed = Distance / Time
- Speed = 5 km / (5/12) hr
- Speed = 5 km × (12/5) hr⁻¹
- Speed = (5 × 12) / 5 km/hr
- Speed = 60 / 5 km/hr
- Speed = 12 km/hr
This means Ezra was jogging at a speed of 12 kilometers per hour.
To check whether the answer is reasonable, consider that traveling 10 km in a third of an hour (20 minutes) would correspond to a speed of 30 km/hour, so traveling 5 km in less than half of that time does give us a reasonable speed when we simplify it to 12 km/hour, which is a bit slower than the 30 km/hour example.