Question

Расстояние между пунктами а и б 24 км. из пункта а в пункт б отправился пешеход со скоростью 4 км в час. через 2 часа по тому же маршруту отправился второй пешеход, который достиг пункта б одновременно с первым пешеходом. найти скорость второго пешехода.

Answer 1

24:4=6 час должен идти 1 пешеход
6-2=4 часа ему осталось идти, когда вышел 2 пешеход⇒
2 пешеход шел 4 часа
24:4=6 км/ч  скорость 2 пешехода
ответ 6 км/ч

Answer 2

Problem Analysis

We are given that the distance between point A and point B is 24 km. The first pedestrian travels from point A to point B at a speed of 4 km/h. After 2 hours, the second pedestrian starts from point A and reaches point B at the same time as the first pedestrian. We need to find the speed of the second pedestrian.

Solution

Let's assume the speed of the second pedestrian is x km/h.

The time taken by the first pedestrian to travel from point A to point B is given by: time1 = distance / speed1 = 24 km / 4 km/h = 6 hours.

Since the second pedestrian reaches point B at the same time as the first pedestrian, the time taken by the second pedestrian to travel from point A to point B is: time2 = time1 - 2 hours = 6 hours - 2 hours = 4 hours.

Now, we can use the formula speed = distance / time to find the speed of the second pedestrian: x = distance / time2 = 24 km / 4 hours = 6 km/h.

Therefore, the speed of the second pedestrian is 6 km/h.

Answer

The speed of the second pedestrian is 6 km/h.