At 15 31, Elyse started driving at 60 km/h from her home to a park 40 km away. She was at the park for 1 h 46 min.
- What time did she leave the park?
- After leaving the park, Elyse drove back along the same route and took 24 min to reach home. What was her average speed, in km/h, for the journey home?