Question 15
Father leaves home at 09:00, goes to the park, then Lucy’s camp, then home. The graph gives his distance from home. His average speed over the entire trip is 24 km/h. When does he reach the camp?
Intended model: travel is along one route without detours; the graph’s flat part is a stop, and whole-trip average speed includes that stop.
Intended model: travel is along one route without detours; the graph’s flat part is a stop, and whole-trip average speed includes that stop.