Between points A and B, the distance is 60 km. A cyclist left point A at a speed of 15 km / h. At the same time

| February 13, 2021 | education

Between points A and B, the distance is 60 km. A cyclist left point A at a speed of 15 km / h. At the same time, a motorcyclist left point B in the same direction at a speed of 30 km / h. What is the distance between them after 4 hours of travel?

Because according to the condition of the problem, the cyclist and the motorcyclist move in the same direction, but with different speeds, they will move away from each other at a speed:

1) 30 – 15 = 15 (km / h).

Those. after 4 hours of travel, they will move away from each other at a distance:

2) 15 * 4 = 60 (km).

But since they left not from one point, but from different points, between which there were 60 km, which means the distance between them will be:

3) 60 + 60 = 120 (km).

Answer: The distance between cyclist and motorcyclist is 120 km after four hours.



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