Question

Два бегуна бегут навстречу друг другу. расстояние между ними 5 км. найти их скорость, если скорость второго на 2км ч больше скорости первого и они встретяться через 0.5ч . Помогите решить пожалуйста

Answer 1

вооот ооон отвеееет 7 и 3 км\ч

Answer 2

Problem Analysis

We have two runners who are running towards each other. The distance between them is 5 km. We need to find their speeds given that the second runner's speed is 2 km/h faster than the first runner's speed, and they will meet after 0.5 hours.

Solution

Let's assume the speed of the first runner is x km/h. Since the second runner's speed is 2 km/h faster, the speed of the second runner is x + 2 km/h.

We know that speed = distance / time. In this case, the distance is 5 km and the time is 0.5 hours.

For the first runner: x = distance / time = 5 km / 0.5 h = 10 km/h.

For the second runner: x + 2 = 10 km/h + 2 km/h = 12 km/h.

Therefore, the speed of the first runner is 10 km/h, and the speed of the second runner is 12 km/h.

Answer

The speed of the first runner is 10 km/h, and the speed of the second runner is 12 km/h.