Question

Товарный поезд прошел 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

1)3+4=7 часов всего в пути
2)315:7=45 км/час скорость поезда
3)45*3=135 км до остановки
4)45*4=180 км после остановки

Answer 2

Calculation of Distance Traveled Before and After the Stop

To calculate the distance traveled before and after the stop, we need to consider the total distance traveled, the duration of the journey, and the duration of the stop.

Given: - Total distance traveled: 315 km - Duration of the journey before the stop: 3 hours - Duration of the stop: 4 hours

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

Distance before stop = (Duration before stop / Total duration) * Total distance

Substituting the given values:

Distance before stop = (3 hours / (3 hours + 4 hours)) * 315 km

Calculating the distance before the stop:

Distance before stop = (3 / 7) * 315 km

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

Distance after stop = (Duration after stop / Total duration) * Total distance

Substituting the given values:

Distance after stop = (4 hours / (3 hours + 4 hours)) * 315 km

Calculating the distance after the stop:

Distance after stop = (4 / 7) * 315 km

Now, let's calculate the distances:

Distance before stop = (3 / 7) * 315 km = 135 km Distance after stop = (4 / 7) * 315 km = 180 km

Therefore, the train traveled 135 km before the stop and 180 km after the stop if it traveled at a constant speed.