The car drove one third of the way at a speed of 20 km / h, the remaining two thirds at a speed of 80 km / h.
| December 21, 2020 | education
The car drove one third of the way at a speed of 20 km / h, the remaining two thirds at a speed of 80 km / h. What is the average vehicle speed.
The car drove the first third of the way 20 km / h
The second at a speed of 80 km / h
Third, respectively, 80 km / h
We get:
(20 + 80 + 80) / 3 = 180/3 = 60 km / h – average vehicle speed
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