Answer & Step-by-step explanation:
Speed = Distance / Time
In the table the average speeds are given in km/hr so we will continue to work with that.
1. Convert the times given in minutes, into hours.
10 min / 60 min = 0.167 hr
Using the equation Speed = Distance / Time
20km / 0.167hr = 119km
2. Try the same approach for the second question.
3. For the third question we will use the same equation, but rearrange it to find distance
Distance = Speed × Time
71km/h × 2 = 142km
4. Rearrange the equation again for time
Time = Distance / Speed
55km / 2.6km/hr = 21hr
