Question

Два пешехода пешехода вышли одновременно навстреяу друг другу из двух сёл первый прошёл до встречи 12км со скоростью 4км/ч. Второй шёл со скоростью 5км/ч. Чему равно расстояние между сёлами?

Answer 1

1) 12:4=3
2) 5*3=15
3) 12+15=27

Answer 2

Problem Analysis

We are given that two pedestrians start walking towards each other from two different villages. The first pedestrian walks at a speed of 4 km/h and covers a distance of 12 km before meeting the second pedestrian. The second pedestrian walks at a speed of 5 km/h. We need to find the distance between the two villages.

Solution

Let's assume the distance between the two villages is x km.

The time taken by the first pedestrian to cover the distance of 12 km is given by: time taken = distance / speed = 12 km / 4 km/h = 3 hours.

Similarly, the time taken by the second pedestrian to cover the distance of x km is given by: time taken = distance / speed = x km / 5 km/h = x/5 hours.

Since both pedestrians start walking at the same time and meet after 3 hours, we can set up the following equation: 3 hours = x/5 hours.

To find the value of x, we can cross-multiply the equation: 3 * 5 = x.

Therefore, the distance between the two villages is 15 km.

Answer

The distance between the two villages is 15 km.

Explanation

Two pedestrians start walking towards each other from two different villages. The first pedestrian walks at a speed of 4 km/h and covers a distance of 12 km before meeting the second pedestrian. The second pedestrian walks at a speed of 5 km/h. Since both pedestrians start walking at the same time and meet after 3 hours, we can calculate the distance between the two villages using the formula distance = speed * time. Therefore, the distance between the two villages is 15 km