Two individuals, A and B, travel a certain distance. A travels at a speed of 5 km/h for 2 hours, and B travels at a speed of 8 km/h for 1 hour. What is the approximate average speed of A and B for the entire journey?
1
5 km/hr
2
5.5 km/hr
3
6 km/hr
4
6.5 km/hr
5
7.5 km/hr