At 17 49, Gabby started driving at 70 km/h from her home to a bistro 35 km away. She was at the bistro for 2 h 26 min.
- What time did she leave the bistro?
- After leaving the bistro, Gabby drove back along the same route and took 35 min to reach home. What was her average speed, in km/h, for the journey home?