Question

Товарный поезд прошёл 315 км он был в пути до остановки 3 часа и после остановки 4 часа Сколько километров прошел поезд до остановки и сколько после если он шел с одинаковой скоростью

Answer 1

315:7=45 за 1час  
45*3=135 до остановки 
45*4=180 после

Answer 2

Calculation of Distance Traveled by the Train

To calculate the distance traveled by the train before and after the stop, we need to consider the total time the train was in motion and the speed at which it was traveling.

Given: - The train traveled a total distance of 315 km. - The train was in motion for 3 hours before the stop and 4 hours after the stop. - The train traveled at a constant speed throughout the journey.

To find the distance traveled before the stop, we can use the formula:

Distance = Speed × Time

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

The distance traveled before the stop can be calculated as:

Distance before stop = Speed × Time before stop

Similarly, the distance traveled after the stop can be calculated as:

Distance after stop = Speed × Time after stop

Since the train traveled the same distance before and after the stop, we can set up the following equation:

Distance before stop = Distance after stop

Substituting the formulas for distance before and after the stop, we get:

Speed × Time before stop = Speed × Time after stop

Since the speed is the same, we can cancel it out:

Time before stop = Time after stop

Given that the train was in motion for 3 hours before the stop and 4 hours after the stop, we can conclude that:

The train traveled 3 hours before the stop and 4 hours after the stop.

Now, let's calculate the distance traveled before and after the stop.

Calculation of Distance Traveled Before the Stop

Using the formula:

Distance before stop = Speed × Time before stop

Substituting the given values:

Distance before stop = v km/h × 3 hours

We don't have the value of the speed, so we cannot calculate the exact distance traveled before the stop.

Calculation of Distance Traveled After the Stop

Using the formula:

Distance after stop = Speed × Time after stop

Substituting the given values:

Distance after stop = v km/h × 4 hours

We don't have the value of the speed, so we cannot calculate the exact distance traveled after the stop.

In conclusion, without knowing the speed of the train, we cannot determine the exact distances traveled before and after the stop.