Question

Из 2 городов расстояние между которых 520 км одновременно вышли навстречу друг другу 2 поезда и встретились через 4 часа . 1 поезд шёл со скоростью 60 км/ ч. с какой скоростью шёл другой поезд?

Answer 1

520/4-60=70 км/ч
Ответ: второй поезд шел со скоростью 70 километров в час.

Answer 2

60×40=240 проехал первый
520-240=280проехал другой
280:4=70км/ч скорость второго

Answer 3

Problem Analysis

We are given that two trains started simultaneously from two cities and met each other after 4 hours. The speed of one train is given as 60 km/h. We need to find the speed of the other train.

Solution

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

We know that the distance covered by both trains is 520 km, and the time taken to meet is 4 hours.

Using the formula distance = speed × time, we can write the following equations:

For the first train: 60 km/h × 4 hours = 240 km

For the second train: x km/h × 4 hours = 520 km - 240 km = 280 km

To find the value of x, we can rearrange the equation as follows: x km/h = 280 km / 4 hours = 70 km/h

Therefore, the speed of the second train is 70 km/h.

Answer

The second train was traveling at a speed of 70 km/h.

Explanation

The first train traveled a distance of 240 km in 4 hours at a speed of 60 km/h. The second train traveled the remaining distance of 280 km in the same 4 hours, resulting in a speed of 70 km/h