Question

Од двух станций,расстояние между которыми 34км,одновремено в противоположных направлениях отошли два поезда.Один поезд шёл со скоростью 82км/ч,а другой-со скоростью на 8км/ч больше.Какое расстояние будет между поездами через 3ч?

Answer 1

1)82+8=90(км/ч)-скорость втор.поезда
2)82+90=172(км/ч)-скорость отдаления
3)172*3=516(км)-через 3 часа
4)516+34=550(км)-расстояние через 3 часа

Answer 2

Problem Analysis

We are given two stations that are 34 km apart. Two trains start simultaneously from these stations in opposite directions. The first train is traveling at a speed of 82 km/h, while the second train is traveling at a speed 8 km/h faster than the first train. We need to find the distance between the trains after 3 hours.

Solution

To find the distance between the trains after 3 hours, we need to calculate the distance traveled by each train in 3 hours and then find the difference between these distances.

Let's calculate the distance traveled by each train in 3 hours:

- The first train is traveling at a speed of 82 km/h. So, in 3 hours, it will travel a distance of 82 km/h * 3 h = 246 km.

- The second train is traveling at a speed 8 km/h faster than the first train, which means it is traveling at a speed of 82 km/h + 8 km/h = 90 km/h. So, in 3 hours, it will travel a distance of 90 km/h * 3 h = 270 km.

Now, let's find the difference between these distances to get the distance between the trains after 3 hours:

- Distance between the trains = Distance traveled by the second train - Distance traveled by the first train - Distance between the trains = 270 km - 246 km = 24 km.

Therefore, the distance between the trains after 3 hours will be 24 km.