At 13 43, Jade started driving at 72 km/h from her home to a supermarket 42 km away. She was at the supermarket for 1 h 17 min.
- What time did she leave the supermarket?
- After leaving the supermarket, Jade 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?