A car travels first 160 km at 64 km/hr and the next 160 km at 80 km/hr. What is the average speed for the first 320 km of the tour?
1
71.11 km/hr
2
72.22 km/hr
3
70.11 km/hr
4
61.88 km/hr
5
95.36 km/hr
A car travels first 160 km at 64 km/hr and the next 160 km at 80 km/hr. What is the average speed for the first 320 km of the tour?