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 ? February 16, 2024 – by admin 0A. 74. 24 km/hrB. 72.21 km/hrC. 70.24 km/hrD. 71.11 km/hr