Respuesta :

ssyoung

Answer:

Average speed  =  (total distance) / (total time)

Total distance  =  100 km + 200 km  =  300 km

Total 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)

Explanation: