# In which time A and B meet? If

A and B are two towns 20 km apart. at 9:00 a.m., a motorcyclist starts out from A for B at a speed of 30 km/hour. He stays 20 minutes at B and then sets out to return to A at the same speed. At 9:30 a.m., a pedestrian starts from A to walk to B at 5 km/hour. They will meet at

- 11:00 a.m.
- 9:50 a.m.
- 10:00 a.m.
- 10:30 a.m.