At 15 40, Hilda started driving at 60 km/h from her home to a hypermart 44 km away. She was at the hypermart for 2 h 29 min.
- What time did she leave the hypermart?
- After leaving the hypermart, Hilda drove back along the same route and took 40 min to reach home. What was her average speed, in km/h, for the journey home?