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1. |
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? |
A. | 70.24 km/hr |
B. | 74. 24 km/hr |
C. | 71.11 km/hr |
D. | 72.21 km/hr |
Answer» D. 72.21 km/hr | |