The motorcyclist was driving from city A to city B at a speed of 60 km / h, and back at a speed of 40 km / h.
| September 1, 2021 | education
The motorcyclist was driving from city A to city B at a speed of 60 km / h, and back at a speed of 40 km / h. What was the average speed of his movement during the entire journey?
1. Let X km be the distance between cities A and B.
It is known that from A to city B the speed of a motorcyclist was 60 km / h.
Then the travel time was X / 60 hours.
The motorcyclist was driving back at a speed of 40 km / h.
The return journey time is X / 60 hours.
2. Let’s calculate the average speed of a motorcyclist on the way.
To do this, the distance traveled must be divided by the total time.
Path length X + X = 2 * X km.
The travel time is X / 40 + X / 60 = X / 24 hours.
2 * X / (X / 24) = 2 * 24 = 48 km / h.
Answer: The average speed was 48 km / h.
One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.
