Question

Из двух городов расстояние между которыми 440 км, вышли одновременно навстречу друг другу пассажирский и товарный поезд, и встретилась через 5 ч.Скорость пассажирского поезда 560км/ч.Найди скорость товарного поезда

Answer 1

1)440÷5=88
2)560-88=472

Answer 2

Problem Analysis

We are given that the distance between two cities is 440 km. A passenger train and a freight train start simultaneously from these two cities towards each other. They meet after 5 hours. The speed of the passenger train is 560 km/h. We need to find the speed of the freight train.

Solution

Let's assume the speed of the freight train is x km/h.

The total distance traveled by the passenger train in 5 hours is 560 km/h * 5 h = 2800 km.

Similarly, the total distance traveled by the freight train in 5 hours is x km/h * 5 h = 5x km.

Since the two trains are traveling towards each other, the sum of the distances traveled by both trains should be equal to the total distance between the cities, which is 440 km.

Therefore, we can write the equation:

2800 km + 5x km = 440 km

Simplifying the equation:

5x km = 440 km - 2800 km

5x km = -2360 km

Dividing both sides by 5:

x km = -2360 km / 5

x km = -472 km

The speed of the freight train cannot be negative, so there seems to be an error in the given information or calculation. Please double-check the values provided.

If you have any further questions, feel free to ask!

Answer 3

Пусть скорость товарного поезда будет V км/ч.

Так как пассажирский и товарный поезда встретились через 5 часов, то расстояние между городами пройдено суммарно за 5 часов.

Расстояние = скорость * время

Для пассажирского поезда: 440 км = 560 км/ч * 5 ч 440 км = 2800 км

Для товарного поезда: 440 км = V км/ч * 5 ч

Теперь найдем скорость товарного поезда:

440 км = V км/ч * 5 ч V км/ч = 440 км / 5 ч V км/ч = 88 км/ч

Скорость товарного поезда равна 88 км/ч.