Question

Два пешехода выйшли одновременно из двух пунктов на расстоянии 12 км между ими, первый идёт со скоростью 4 км ч,второй 2 км ч через сколько они встретились

Answer 1

Решение:
2+4=6 км/ч общая скорость
12:6=2 ч
Ответ они встретятся через 2 часа

Answer 2

2+4=6 (км/ч) совместная скорость

12:6=2 (ч)

Answer 3

Problem Analysis

We are given that two pedestrians start walking simultaneously from two different points that are 12 km apart. The first pedestrian walks at a speed of 4 km/h, while the second pedestrian walks at a speed of 2 km/h. We need to determine how long it will take for them to meet.

Solution

To solve this problem, we can use the formula: time = distance / speed.

Let's calculate the time it takes for each pedestrian to reach the meeting point.

The first pedestrian covers the distance of 12 km with a speed of 4 km/h. Using the formula, we can calculate the time taken by the first pedestrian as follows:

Time taken by the first pedestrian = distance / speed = 12 km / 4 km/h = 3 hours.

Similarly, the second pedestrian covers the same distance of 12 km with a speed of 2 km/h. Using the formula, we can calculate the time taken by the second pedestrian as follows:

Time taken by the second pedestrian = distance / speed = 12 km / 2 km/h = 6 hours.

Since the pedestrians started walking simultaneously, the time taken by both pedestrians to meet will be the same. Therefore, they will meet after 3 hours.

Answer

The two pedestrians will meet after 3 hours.