Answer: average speed = 92 km/h
Step-by-step explanation:
1) Data:
distance 1 = 86 km
time 1 = 1 hour
distance 2 = 98 km
time 2 = 1 hour
average speed = ?
2) Formula:
average speed = distance / time
3) distance = distance 1 + distance 2 = 86 km + 98 km = 184 km
4) time = time 1 + time 2 = 1 h + 1 h = 2h
5) average speed = 184 km / 2h = 92 km/h