Half way at a speed of 90 km / h, half at a speed of 70 km / h, what is the average speed.

univerkov | September 4, 2021 | education

It is known from the problem statement that the first half was covered at a speed of 90 km / h, and the second half of the journey was covered at a speed of 70 km / h. Before finding the average vehicle speed, let’s calculate the speed of the entire path.

1) 90 + 70 = 160 (km / h) – the total speed from the first and second half of the journey.

Now we can answer the main question of the problem. What is the average vehicle speed.

2) 160: 2 = 80 (km / h) – average vehicle speed.

Answer: The average vehicle speed is 80 km / h.

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