Hey family takes a car trip and they travel from an hour at 80 km/h and than for 2hourse at 40 km/h finf the average speed during the trip

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

Distance during the first hour = (80 km/hr) x (1 hr)  =  80 km

Distance during the next 2 hours = (40 km/hr) x (2 hrs)  =  80 km

Total distance  =  80 km + 80 km  =  160 km.

Total time = 1 hr + 2 hrs  =  3 hrs

Average speed  =  (160 km) / (3 hrs)  =  (53 and 1/3) km/hr.

Kiloleter, mega leterhope this !