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 car travels first 160 km at 64 km/hr and the next 160 km at 80 km/h

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

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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?

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