Question

Длина круговой трассы равна 24 км. Одновременно из одной точки на этой трассе стартовали два гонщика. Первый гонщик ехал со скоростью 60 км/ч и через 45 минут после старта обогнал второго на круг. Найди скорость второго гонщика (в км/ч).

Answer 1

Ответ:

Пошаговое объяснение:

Answer 2

Problem Analysis

We are given that the length of a circular track is 24 km. Two racers start from the same point on the track simultaneously. The first racer overtakes the second racer after 45 minutes. We need to find the speed of the second racer in km/h.

Solution

Let's assume the speed of the second racer is x km/h. Since the first racer overtakes the second racer after completing one lap, we can set up the following equation:

Distance covered by the first racer = Distance covered by the second racer + Length of the track

The distance covered by the first racer is given by the formula: speed * time. The time is 45 minutes, which is equal to 45/60 = 0.75 hours.

So, the equation becomes:

60 * 0.75 = x * 0.75 + 24

Simplifying the equation:

45 = 0.75x + 24

Now, we can solve this equation to find the value of x.

45 - 24 = 0.75x

21 = 0.75x

x = 21 / 0.75

x = 28

Therefore, the speed of the second racer is 28 km/h.

Answer

The speed of the second racer is 28 km/h.