Question

Сделайте умоляю. два поезда вышли одновременно навстречу друг другу с двух станций расстояние между которыми 390 км.Один из них идёт со скростью на 18 км/ч больше скорости другого.Определи скорость каждого поезда,если известно,что через 4 часа осталось до встречи 30 километров

Answer 1

(х + х + 18) * 4 = 390 - 30
8х + 72 = 360
8х = 360 - 72
х = 288 / 8
х = 36 км/ч одного
36 + 18 = км/ч второго

Answer 2

Problem Analysis

We have two trains that start simultaneously from two different stations and are moving towards each other. The distance between the two stations is 390 km. One train is traveling at a speed that is 18 km/h faster than the other train. After 4 hours, there are 30 kilometers left until the trains meet. We need to determine the speed of each train.

Solution

Let's assume the speed of the slower train is x km/h. Therefore, the speed of the faster train will be x + 18 km/h.

We can use the formula distance = speed × time to calculate the distance traveled by each train after 4 hours.

For the slower train: distance = speed × time 390 - 30 = x × 4

For the faster train: distance = speed × time 390 - 30 = (x + 18) × 4

Let's solve these equations to find the speeds of the two trains.

Calculation

From the first equation, we have: 360 = 4x x = 90

Substituting the value of x into the second equation, we have: 360 = (90 + 18) × 4 360 = 108 × 4 360 = 432

Answer

The calculation shows that the equation 360 = 432 is not true. This means that there is no solution to the given problem. The information provided is inconsistent or incorrect.

Please double-check the given information and provide any additional details if available.