Question

Из двух сел между которыми растояние 12 км одновременно вышли в противоположные стороны два пешехода. Скорость одного 4 км/ч, а другого - 5 км/ч. На каком расстоянии друг от друга они будут через 3 часа?

Answer 1

Problem Analysis

We have two pedestrians who start walking simultaneously from two different villages. The distance between the villages is 12 km. One pedestrian walks at a speed of 4 km/h, while the other walks at a speed of 5 km/h. We need to determine the distance between them after 3 hours.

Solution

To find the distance between the two pedestrians after 3 hours, we need to calculate the distance each pedestrian has traveled in 3 hours and then find the difference between their distances.

Let's calculate the distance traveled by each pedestrian:

- The first pedestrian walks at a speed of 4 km/h. In 3 hours, they would have traveled 4 km/h * 3 h = 12 km. - The second pedestrian walks at a speed of 5 km/h. In 3 hours, they would have traveled 5 km/h * 3 h = 15 km.

Now, we can find the distance between them by subtracting the distance traveled by the first pedestrian from the distance traveled by the second pedestrian:

- Distance between the two pedestrians = Distance traveled by the second pedestrian - Distance traveled by the first pedestrian - Distance between the two pedestrians = 15 km - 12 km = 3 km.

Therefore, after 3 hours, the two pedestrians will be 3 km apart from each other.

Answer

After 3 hours, the two pedestrians will be 3 km apart from each other.