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.