Question

Из двух посёлков, расстояние между которыми 27 км, вышли одновременно навстречу друг другу два пешехода. Скорость первого 5 км/ч, а скорость второго 4 км/ч. Через сколько часов пешеходы встретятся?

Answer 1

1)5+4=9 (км/ч) вместе
2) 27:9=3(ч) они встретятся
Мы ее сегодня решали)

Answer 2

Problem Analysis

We have two pedestrians walking towards each other from two villages that are 27 km apart. The first pedestrian has a speed of 5 km/h, while the second pedestrian has a speed of 4 km/h. We need to determine how many hours it will take for the pedestrians 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.

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

Calculation

The relative speed of the pedestrians is 5 km/h + 4 km/h = 9 km/h.

The distance between the two villages is 27 km.

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

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

Therefore, the pedestrians will meet after 3 hours.

Answer

The pedestrians will meet after 3 hours.