Question

Из деревни одновременно в противоположных направлениях вышли два пешехода. Скорость одного из них равна 6,2 км./час , а другого - на 1,4 км/час меньше. Какое расстояние будет между ними через 4 часа?

Answer 1

6,2*4 + (6,2 - 1,4)*4 = 24,8 + 19,2 = 44 км

Answer 2

1) 6,2 * 4 = 24,8 км - прошёл первый пешеход

2) 6,2 - 1,4 = 4,8 км/час - скорость второго пешехода

3) 4,8 * 4 = 19,2 км - прошёл второй пешеход

4) 24,8 + 19,2 = 44 км - будет между ними через 4 часа

Answer 3

Problem Analysis

We are given that two pedestrians start walking simultaneously in opposite directions from a village. The speed of one pedestrian is 6.2 km/h, while the speed of the other pedestrian is 1.4 km/h less. We need to find the distance between them after 4 hours.

Solution

To find the distance between the two pedestrians after 4 hours, we need to calculate the total distance covered by each pedestrian and then find the difference between the two distances.

Let's calculate the distance covered by each pedestrian:

- The speed of the first pedestrian is 6.2 km/h. So, in 4 hours, the first pedestrian will cover a distance of 6.2 km/h * 4 h = 24.8 km.

- The speed of the second pedestrian is 1.4 km/h less than the first pedestrian. So, the speed of the second pedestrian is (6.2 km/h - 1.4 km/h) = 4.8 km/h. In 4 hours, the second pedestrian will cover a distance of 4.8 km/h * 4 h = 19.2 km.

Now, let's find the difference between the distances covered by the two pedestrians:

- The distance between the two pedestrians after 4 hours is 24.8 km - 19.2 km = 5.6 km.

Therefore, the distance between the two pedestrians after 4 hours is 5.6 km.

Answer

The distance between the two pedestrians after 4 hours is 5.6 km.