How long did the car stop after reaching point B?

The problem states that the car stopped for 2 hours after reaching point B. Graph 2 shows that the car reached point B at t=11. The car then remained at a distance of 120 km from A for a duration of 2 hours, indicated by a horizontal line segment on the graph. This horizontal segment extends from t=11 to t=13.

Ответ: 2 часа