Question

1) Реши задачу, составив уравнение. Из двух городов вышли одновременно навстречу друг другу поезда и встретились через 18 часов. Определи скорость каждого поезда,если расстояние между городами 1620 км,а скорость одного поезда на 10 км больше скорости другого.

Answer 1

1620:18= ..... Км/ ч - это скорость поезда. Но поскольку скорость одного поезда больше на 10 км/ ч, то надо прибавить к этому числу 10 и получится скорость другого поезда

Answer 2

Problem Analysis

To solve this problem, we need to determine the speeds of two trains that start from different cities and meet each other after 18 hours. We are given that the distance between the cities is 1620 km, and the speed of one train is 10 km/h greater than the speed of the other 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 + 10 km/h.

We can use the formula speed = distance / time to find the speeds of the trains.

The time taken by both trains to meet each other is 18 hours.

Now, let's calculate the speeds of the trains.

Calculation

The speed of the slower train is x km/h, and the speed of the faster train is x + 10 km/h.

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

For the slower train: x = distance / time = 1620 / 18 = 90 km/h

For the faster train: x + 10 = distance / time = 1620 / 18 = 90 km/h

Therefore, the speed of the slower train is 90 km/h, and the speed of the faster train is 100 km/h.

Answer

The speed of the slower train is 90 km/h, and the speed of the faster train is 100 km/h.

Please let me know if you need any further assistance.