Question

Из двух городов,расстояние между которыми 500 км,вышли одновременно навстречу друг другу 2 поезда . Скорость одного поезда 45 км\ч. Определить скорость второго поезда,если они встретились через 5 часов.

Answer 1

1) 45*5=225(км) - прошел 1-й поезд за 5 часов
2) 500-225=275(км) - прошел 2-й поезд за 5 часов
3) 275/5=55(км/ч) - скорость 2-го поезда
Ответ : скорость 2-го поезда составляет 55 км/ч

Answer 2

45*5=225 км-проехал 1 поезд
500-225=275 км-проехал 2 поезд
275:5=55 км/ч- скорость 2 поезда

Answer 3

Problem Analysis

We are given that two trains start simultaneously from two cities that are 500 km apart and are moving towards each other. The speed of one train is given as 45 km/h. We need to determine the speed of the second train if they meet after 5 hours.

Solution

To solve this problem, we can use the formula:

Distance = Speed x Time

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

The distance covered by the first train in 5 hours is: Distance1 = Speed1 x Time = 45 km/h x 5 hours = 225 km

The distance covered by the second train in 5 hours is: Distance2 = Speed2 x Time = x km/h x 5 hours = 5x km

Since the total distance between the two cities is 500 km, we can write the equation:

Distance1 + Distance2 = Total Distance 225 km + 5x km = 500 km

Simplifying the equation, we get: 5x km = 275 km

To find the value of x, we divide both sides of the equation by 5: x = 55 km/h

Therefore, the speed of the second train is 55 km/h.

Answer

The speed of the second train is 55 km/h.