Question

От 2 вокзалов расстояние между которыми 310 км навстречу друг другу одновременно вышли два поезда Скорость одного поезда 75 км в час скорость другого 80 километров час через сколько часов они встретятся

Answer 1

75+80=155(скорость сближения) 310÷155=2часа

Answer 2

Problem Analysis

We have two trains that start from two different stations and are traveling towards each other. The distance between the two stations is 310 km. The first train has a speed of 75 km/h, and the second train has a speed of 80 km/h. We need to determine how many hours it will take for the two trains to meet.

Solution

To solve this problem, we can use the formula: time = distance / speed. We can calculate the time it takes for each train to cover the distance between the two stations, and the sum of these times will give us the total time it takes for the trains to meet.

Let's calculate the time it takes for the first train to cover the distance: - Distance: 310 km - Speed: 75 km/h - Time = 310 km / 75 km/h = 4.133 hours

Now, let's calculate the time it takes for the second train to cover the distance: - Distance: 310 km - Speed: 80 km/h - Time = 310 km / 80 km/h = 3.875 hours

The total time it takes for the two trains to meet is the sum of these times: - Total time = 4.133 hours + 3.875 hours = 7.008 hours

Therefore, it will take approximately 7 hours for the two trains to meet.

Answer

The two trains will meet approximately 7 hours after they start their journey from their respective stations.