Question

помогите плиззадача: с двух станций,расстояние между которыми 720 км, вышли одновременно навстречу друг другу два поезда .Скорость первого поезда 75 км/ч, а скорость второго на 10км/ч больше.На каком расстоянии друг от друга будут поезда через 4 ч? задачу нужно решить с поеснениями в действиях

Answer 1

1)75+10=85 км/час скорость второго поезда

2)75+85=160 км/час скорость сближения

3)160*4=640 км пройдут поезда за 4 часа

4)720-640=80 км будет расстояние между ними

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Answer 2

Problem Analysis

We are given two trains that start from two different stations and are traveling towards each other. The distance between the stations is 720 km. The first train is traveling at a speed of 75 km/h, while the second train is traveling at a speed that is 10 km/h faster than the first train. We need to find the distance between the trains after 4 hours.

Solution

To solve this problem, we can use the formula:

Distance = Speed × Time

Let's calculate the distance traveled by each train after 4 hours.

The first train is traveling at a speed of 75 km/h, so the distance traveled by the first train after 4 hours is:

Distance of the first train = Speed of the first train × Time = 75 km/h × 4 h = 300 km.

The second train is traveling at a speed that is 10 km/h faster than the first train, so its speed is 75 km/h + 10 km/h = 85 km/h. Therefore, the distance traveled by the second train after 4 hours is:

Distance of the second train = Speed of the second train × Time = 85 km/h × 4 h = 340 km.

Now, let's find the distance between the two trains after 4 hours. Since they are traveling towards each other, the distance between them is the sum of the distances traveled by each train:

Distance between the trains = Distance of the first train + Distance of the second train = 300 km + 340 km = 640 km.

Therefore, the two trains will be 640 km apart after 4 hours.

Answer

The two trains will be 640 km apart after 4 hours.

References

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