one hour 15 minutes for a girl that is
20/60=1/3 of one hour 15 * 1/3 = 5 km is the distance he'd cover. Although 4 min/km is NOT walking pace. That's a good running speed.
2.33 km or 1.45 miles.
Average would be about a 10 minute per mile pace, so 30 mins. A decent time is sub 20 minutes.
200 micro secs
your answer will be got by (total distance) divided by ( total time).
37 minutes
The Question is written incorrectly it should be 10km running 3km. While the question is like this you've done 7 extra kilometers but my way makes it 3Hrs and 20 mins.
20 km is 10 times longer than 2 km.
20 kilometers = 12.4 miles.
70
1 km = 10000 dm 20 km = 200000 dm
The average during that period of time is 20 km/hour west .