Question

Из одного населенного пункта в противоположных направлениях вышли два пешехода. через 3 часа расстояние между ними составило 27 км. найди скорости второго пешехода если скорость первого 4 км\ч

Answer 1

27:3-4=5км Ответ 2 пешеход шёл 5 км/ч

Answer 2

4 *3=12км-1прошел
27-12=15км-прошел2
15;3=5км ч

Answer 3

Problem Analysis

Two pedestrians start walking in opposite directions from the same location. After 3 hours, the distance between them is 27 km. We need to find the speed of the second pedestrian given that the speed of the first pedestrian is 4 km/h.

Solution

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

After 3 hours, the first pedestrian would have covered a distance of 4 km/h * 3 h = 12 km.

The second pedestrian, who started from the same location, would have covered a distance of x km/h * 3 h = 3x km.

The total distance between them is given as 27 km.

So, we can write the equation: 12 km + 3x km = 27 km.

Simplifying the equation, we get: 3x km = 27 km - 12 km.

Simplifying further, we get: 3x km = 15 km.

Dividing both sides of the equation by 3, we get: x km = 15 km / 3.

Simplifying, we find that the speed of the second pedestrian is 5 km/h.

Answer

The speed of the second pedestrian is 5 km/h.