Question

Два пешехода вышли одновременно из двух деревень навстречу друг другу. Один шёл со скоростью 5 км/ч, скорость другого 4 км/ч. Через сколько часов они встретятся, если расстояние между деревнями 36 км?

Answer 1

1)5+4=(км/ч)вместе
2)36:9=4(ч)время
Ответ 4 часа

Answer 2

36:(4+5)=36:9=4часа
t=s/v

Answer 3

Problem Analysis

Two pedestrians are walking towards each other from two different villages. One pedestrian is walking at a speed of 5 km/h, while the other is walking at a speed of 4 km/h. The distance between the villages is 36 km. 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. Let's calculate the time it takes for them to meet.

Calculation

The relative speed of the two pedestrians is 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

Time = 36 km / 9 km/h

Time = 4 hours

Therefore, it will take them 4 hours to meet.

Answer

The two pedestrians will meet after 4 hours