Question

Выполни чертёж, реши задачу по действиям. от двух станций, расстояние между которыми 156 км отошли одновременно в противоположных направлениях два поезда. Скорость одного поезда 45 км/ч, а скорость другого 57 км/ч. Какое расстояние будет между этими поездами через 3 ч?​

Answer 1

Ответ:

1)45+57=102(км/ч) v уд

2)102*3=306(км)-S которое проехали

3)306+156=462(км)-Sобщ

Ответ:Sобш=462 км

Answer 2

Problem Statement

We are given two trains that start simultaneously from two stations, which are 156 km apart, and travel in opposite directions. The speed of one train is 45 km/h, and the speed of the other train is 57 km/h. We need to find the distance between the two trains after 3 hours.

Solution

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

Let's calculate the distance traveled by each train after 3 hours.

The first train travels at a speed of 45 km/h for 3 hours, so the distance it covers is: distance of first train = speed of first train × time = 45 km/h × 3 h = 135 km.

The second train travels at a speed of 57 km/h for 3 hours, so the distance it covers is: distance of second train = speed of second train × time = 57 km/h × 3 h = 171 km.

Since the trains are moving in opposite directions, the distance between them is the sum of the distances covered by each train: distance between the trains = distance of first train + distance of second train = 135 km + 171 km = 306 km.

Therefore, the distance between the two trains after 3 hours is 306 km.

Answer

The distance between the two trains after 3 hours will be 306 km.