Answer:
The average speed of the travel was 64.1 km/h.
Explanation:
We can calculate the average speed of the travel as:
s = (s₁ + s₂) / n = (150 km/h + 100 km/h) / 2 = 250 km / 2 = 125 km/h
where:
s: average speed of the entire travel
s₁: average speed of the first part of the trip
s₂: average speed of the second part of the trip
n: number of parts of the trip
