At 15 50, Gwen started driving at 66 km/h from her home to a bistro 33 km away. She was at the bistro for 1 h 18 min.
- What time did she leave the bistro?
- After leaving the bistro, Gwen drove back along the same route and took 33 min to reach home. What was her average speed, in km/h, for the journey home?