Question

С одной и тойже станции в одно и тоже время вышли в противоположных направлениях 2 поезда.Скорость 1-го 50 км/ч. А 2-го 85 км/ч. Через какое время растояние между ними будет равно 540 км Помогите пожалуйста болела на этой теме не бвло не понимаю прошу помогите :) буду очень благодарна:)

Answer 1

50+85=135км/час скорость удаления
540:135=4 часа через 4 часа

Answer 2

50 + 85 = 135 км/час скорость движения поездов
 540 : 135 = 4 часа. Через это время расстояние между поездами будет 540 км.

Answer 3

Problem Analysis

We have two trains that start from the same station at the same time and travel in opposite directions. The first train has a speed of 50 km/h, and the second train has a speed of 85 km/h. We need to find out how long it will take for the distance between the two trains to be 540 km.

Solution

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

Let's assume that the time it takes for the two trains to meet is t hours. During this time, the first train will travel a distance of 50t km, and the second train will travel a distance of 85t km.

Since the two trains are moving in opposite directions, the sum of their distances traveled will be equal to the total distance between them. Therefore, we can write the equation:

50t + 85t = 540

Simplifying the equation:

135t = 540

Dividing both sides of the equation by 135:

t = 540 / 135 = 4

Therefore, it will take 4 hours for the distance between the two trains to be 540 km.

Answer

The distance between the two trains will be 540 km after 4 hours.