Question

Два пешехода вышли одновременно навстречу друг другу из двух сел расстояние между которыми 27 км скорость одного пешехода пять километров в час скорость другого четыре километров в час через сколько часов они встретятся

Answer 1

1)5+4=9 км/ч- скорость сближения
2)27:9=3 часа

Answer 2

1) 5км/ч + 4км/ч =9км/ч - скорость сближения
2)27÷9=3ч
Ответ:3ч

Answer 3

Problem Analysis

Two pedestrians are walking towards each other from two different villages. The distance between the villages is 27 km. One pedestrian is walking at a speed of 5 km/h, while the other is walking at a speed of 4 km/h. We need to determine how many hours it will take for them to meet.

Solution

To find the time it takes for the pedestrians to meet, we can use the formula:

Time = Distance / Relative Speed

The relative speed is the sum of the speeds of the two pedestrians, as they are walking towards each other.

Let's calculate the time it takes for them to meet.

Calculation

The distance between the villages is 27 km. The speed of the first pedestrian is 5 km/h. The speed of the second pedestrian is 4 km/h.

The relative speed is the sum of their speeds: 5 km/h + 4 km/h = 9 km/h.

Using the formula, we can calculate the time it takes for them to meet:

Time = Distance / Relative Speed = 27 km / 9 km/h = 3 hours

Therefore, it will take them 3 hours to meet.

Answer

The two pedestrians will meet after 3 hours.