At 12 33, Raeann started driving at 54 km/h from her home to a beach 45 km away. She was at the beach for 1 h 21 min.
- What time did she leave the beach?
- After leaving the beach, Raeann 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?