Question

Из двух городов,расстояние между которыми 520 км, одновременно отошли навстречу 2 поезда и встретились через 4 часа.Один поезд шёл со скоростью 60км/ч.С какой скоростью шёл другой поезд? Подскажите пожалуйста )) в долгу не останусь

Answer 1

Решение:

1) 4* 60 = 240 (км)-прошёл 1 поезд за 4часа

2) 520-240= 280(км)-растояние 2поезда за 4 часа.

3) 280 : 4= 70(км/ч)-скорость 2 поезда.

Ответ:70 к/ч

Answer 2

1) 60х4= 240(км) - расстояние, прошедшее первым поездом;
2) (520-240) : 4 = 70 (км/ч) - скорость второго поезда. 
Ответ: 70км/ч

Answer 3

Problem Analysis

We are given that two trains are traveling towards each other from two cities that are 520 km apart. One train is traveling at a speed of 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 traveled by both trains combined is equal to the total distance between the two cities, which is 520 km.

The first train travels at a speed of 60 km/h for 4 hours, so the distance it covers is 60 km/h * 4 h = 240 km.

The second train travels at a speed of x km/h for 4 hours, so the distance it covers is x km/h * 4 h = 4x km.

The sum of the distances covered by both trains is equal to the total distance between the two cities:

240 km + 4x km = 520 km

Simplifying the equation:

4x km = 520 km - 240 km

4x km = 280 km

Dividing both sides of the equation by 4:

x km = 280 km / 4

x km = 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.