Question

Со станции одновременно в противоположных направлениях отправились два поезда .Один поезд ехал со скоростью 72 км.ч. ,а другой 70 км.ч. Какое расстояние было между ними , когда второй поезд проехал 210 км ?

Answer 1

Сначала узнаем время пути
210/70=3 часа
72*3=216 км- расстояние которое проехал 1 поезд
216+210=426 км
Ответ: 426 км

Answer 2

Calculation of the Distance between Two Trains

To calculate the distance between two trains, we need to consider their speeds and the time it takes for the second train to travel a certain distance. In this case, one train is traveling at a speed of 72 km/h, while the other train is traveling at a speed of 70 km/h. We are given that the second train has traveled a distance of 210 km.

To find the distance between the two trains when the second train has traveled 210 km, we can use the formula:

Distance = Speed × Time

Let's calculate the time it took for the second train to travel 210 km:

Time = Distance / Speed

For the second train: Speed = 70 km/h Distance = 210 km

Time = 210 km / 70 km/h = 3 hours

Now that we know the time it took for the second train to travel 210 km, we can calculate the distance between the two trains when the second train reached that point.

For the first train: Speed = 72 km/h Time = 3 hours

Distance = Speed × Time = 72 km/h × 3 hours = 216 km

Therefore, when the second train has traveled 210 km, the distance between the two trains is 216 km.