Adam went for a run in the park. This graph shows Adam's distance from his house during his run.
Distance-time graph for a run. The y-axis is 'Distance from house (km)' from 0 to 5. The x-axis is 'Time (minutes)' from 0 to 60. The graph consists of three straight line segments: (0,0) to (20,4), (20,4) to (30,4), and (30,4) to (45,0).
| Time (minutes) | Distance from house (km) |
|---|---|
| 0 | 0 |
| 10 | 2 |
| 20 | 4 |
| 30 | 4 |
| 45 | 0 |
How far had Adam travelled from his house after 10 minutes?
After 20 minutes, Adam stopped to stretch. For how many minutes did he stretch?
How far did Adam travel in total?