Question

ПОМОГИТЕ ПОЖАЛУЙСТА РЕШИТЬ ЗАДАЧУ!!!Из двух поселков,расстояние между которыми 2 км,выехали одновременно в одном навправлении два велосипидиста.Через 30 минут первый велосепедист догнал второго.С какой скоростью мог двигаться один из велосепедистов,если другой двигался со скоростью 12км/ч?

Answer 1

Давайте назвём велосипедистов буквами сёл, из которых они выехали, велосипедист А и Б.
Теперь из задачи можно увидеть, что за 30 минут велосипедист Б проехал 6 км(12км\2).
Теперь узнаем какая скорость у велосипедиста А. Ему нужно было проехать 2 км до села Б и еще 6 км до велосипедиста Б за пол часа, значит за 30 минут он проехал 8 км. А его скорость в час ровна 8 х 2. То есть 16 км \ час.
Ответ: велосипедист А ехал со скоростью 16 км\ч. 

Answer 2

Problem Analysis

We have two cyclists who start simultaneously from two villages. After 30 minutes, one cyclist catches up with the other. We need to find the speed at which one of the cyclists is moving, given that the other cyclist is moving at a speed of 12 km/h.

Solution

Let's assume that the speed of the cyclist we want to find is x km/h. Since both cyclists started at the same time, the first cyclist traveled for 30 minutes (0.5 hours) longer than the second cyclist.

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

The distance traveled by the first cyclist is equal to the distance traveled by the second cyclist plus the distance the first cyclist traveled in the additional 30 minutes.

Let's calculate the distances:

- Distance traveled by the second cyclist = speed × time = 12 km/h × 0.5 h = 6 km - Distance traveled by the first cyclist = speed × time = x km/h × 1 h = x km

According to the problem, the first cyclist catches up with the second cyclist after 30 minutes. This means that the total distance traveled by the first cyclist is equal to the total distance traveled by the second cyclist.

So, we can write the equation: 6 km + x km = x km.

Simplifying the equation, we get: 6 km = 0 km.

This equation is not possible to solve because it is contradictory. It means that the problem is not solvable with the given information.

Conclusion

The problem cannot be solved with the given information. The equation derived from the problem is contradictory, indicating that there is no valid solution.