Question

Из двух городов , находящихся на расстоянии 1800км , одновременно навстречу друг другу вышли 2 поезда и встретились через 18 часов . Скорость одного поезда 56 км\ ч . Определи скорость другого поезда .

Answer 1

Пусть неизвестная скорость будет х
составляем уравнение
(56+х)*18=1800
1008+18х=1800
18х=1800-1008
18х=792
х=792:18
х=44 км/час - скорость второго поезда

Answer 2

1)56•18=1008
2)1800-1008=792
3)792:18=44

Answer 3

Problem Analysis

We have two trains that start from two different cities and meet each other after 18 hours. The speed of one train is given as 56 km/h. We need to determine the speed of the other train.

Solution

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

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

The distance covered by the first train in 18 hours is 56 × 18 = 1008 km.

Since the two trains are traveling towards each other, the total distance covered by both trains is equal to the distance between the two cities, which is 1800 km.

Therefore, the distance covered by the second train is 1800 - 1008 = 792 km.

Now, we can use the formula again to find the speed of the second train:

792 = x × 18

Simplifying the equation, we get:

x = 792 / 18 = 44 km/h.

Therefore, the speed of the other train is 44 km/h.

Answer

The speed of the other train is 44 km/h.