Question

Расстояние между двумя кишлаками 18 км. из них одновременно навстречу друг другу вышли два пешехода. Через сколько часов они встретятся, если скорость одного пешехода равна 4 км/ч, другого пешехода - 5 км/ч?

Answer 1

T=s:v
t=18:(4+5)
t=18:9
t=2
Отв: через 2 часа

Answer 2

The translation from Russian to English of your message is:

Answer in detail. The distance between two villages is 18 km. Two pedestrians left them at the same time towards each other. How many hours will they meet if the speed of one pedestrian is 4 km/h, the other pedestrian is 5 km/h?

To solve this problem, we can use the formula for the time of meeting of two moving objects:

t = s / (v1 + v2)

where t is the time of meeting, s is the distance between the objects, v1 and v2 are the speeds of the objects.

Substituting the given values, we get:

t = 18 / (4 + 5) = 18 / 9 = 2

Therefore, the two pedestrians will meet after 2 hours.