At 11 42, Fiona started driving at 50 km/h from her home to a supermarket 30 km away. She was at the supermarket for 1 h 19 min.
- What time did she leave the supermarket?
- After leaving the supermarket, Fiona drove back along the same route and took 25 min to reach home. What was her average speed, in km/h, for the journey home?