Question

Из двух городов,расстояние между которыми 492км,одновременно навстречу друг другу выехали два поезда,Скорость одного 60 км/ч,а другого 63 км/ч,Через какое время они встретятся?

Answer 1

1) 60+63=123 (км/ч) - скорость сближения
2)492:123=4 (ч.) - встретятся
3)60*4=240 (км) - первый поезд
4)63*4=252 (км) - второй поезд
Ответ: через 4 часа

Answer 2

60+63=123км/ч скорость сближения поездов, 492:123=4 ч , Ответ : поезда встретятся через 4 часа.

Answer 3

Problem Analysis

We have two trains traveling towards each other from two cities. The distance between the cities is 492 km. The first train is traveling at a speed of 60 km/h, and the second train is traveling at a speed of 63 km/h. We need to calculate the time it takes for the trains to meet.

Solution

To find the time it takes for the trains to meet, we can use the formula:

Time = Distance / Relative Speed

The relative speed is the sum of the speeds of the two trains since they are traveling towards each other.

Let's calculate the time it takes for the trains to meet.

Calculation

The distance between the two cities is 492 km.

The speed of the first train is 60 km/h, and the speed of the second train is 63 km/h.

The relative speed of the two trains is 60 km/h + 63 km/h = 123 km/h.

Using the formula, we can calculate the time it takes for the trains to meet:

Time = Distance / Relative Speed

Time = 492 km / 123 km/h

Time = 4 hours

Therefore, the trains will meet after 4 hours.

Answer

The two trains will meet after 4 hours.