Question

Из города А в город Б вышел поезд со скоростью 50 километров час через 12:00 из города следует поезд вылетел вертолет скорость которого в 7 раз больше скорости поезда и должно поезд на половине пути от А до Б Определи расстояние между городами

Answer 1

Добавим в условии - вертолет догнал на половине пути.
РЕШЕНИЕ
1) d = 50 км/ч * 12 ч = 600 км -  проехал поезд - дистанция "погони".
2) Vc = 7*50 - 50 = 6*50 = 300 км/ч - скорость "погони" - сближения.
3) Т = d : Vc = 600 км : 300 км/ч = 2 ч -  время до встречи.
4) S = V2* 2 = 350 * 2 = 750 км - место встречи -  половина пути.
5) АВ = 2*S = 750 * 2 = 1500 км - расстояние АВ - ОТВЕТ

Answer 2

Calculation of Distance between City A and City B

To calculate the distance between City A and City B, we need to consider the speed of the train and the time it takes for the train to travel half the distance between the two cities.

Given: - Speed of the train: 50 kilometers per hour - The helicopter's speed is 7 times greater than the train's speed - The train departs from City A at 12:00

To determine the distance between City A and City B, we can use the formula:

Distance = Speed × Time

Let's calculate the time it takes for the train to travel half the distance between City A and City B.

The time can be calculated using the formula:

Time = Distance / Speed

Since the train is traveling at a constant speed, the time it takes to travel half the distance is the same as the time it takes to travel the other half.

Let's calculate the time it takes for the train to travel half the distance:

Time = Distance / Speed = (Distance / 2) / Speed

Now, let's calculate the distance between City A and City B.

Distance = Speed × Time = Speed × ((Distance / 2) / Speed)

Simplifying the equation:

Distance = (Speed × Distance) / (2 × Speed)

Simplifying further:

Distance = Distance / 2

This means that the distance between City A and City B is equal to half the distance between the two cities.

Therefore, the distance between City A and City B is equal to the distance traveled by the train in the given time.

Unfortunately, the given information does not provide the time it takes for the train to travel half the distance or the total distance between City A and City B. Without this information, we cannot calculate the exact distance between the two cities.

If you have any additional information or if there is anything else I can assist you with, please let me know!