A car travels 100 km in the first two hours, stops for half an hour and then travels 200 km in the next four hours. Find the average speed of the car

Average speed  =  (total distance) / (total time)Total distance  =  100 km + 200 km  =  300 kmTotal time  =  2 hrs (first part) + 1/2 hr (stop) + 4 hrs (second part) = 6.5 hrs Average speed  =  300 / 6.5  =  46.154 km/hr (rounded)