At 19 54, Zoe started driving at 90 km/h from her home to a hypermart 24 km away. She was at the hypermart for 1 h 33 min.
- What time did she leave the hypermart?
- After leaving the hypermart, Zoe 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?