Question

Со станции одновременно в противоположных направлениях вышли 2 поезда.Скорость одного 65км/ч,а другого 72км/ч.Какое расстояни будет между поездами через 3 часа?

Answer 1

1) 65+72=137 (км/ч)-общая скорость удаления 2) 137×3=411 (км) Ответ:411 км расстояние

Answer 2

Problem Analysis

We have two trains that start simultaneously from a station in opposite directions. The speed of one train is 65 km/h, and the speed of the other train is 72 km/h. 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 each train has traveled in that time.

Let's start by calculating the distance traveled by the first train. We can use the formula:

Distance = Speed × Time

For the first train: - Speed = 65 km/h - Time = 3 hours

Using the formula, we can calculate the distance traveled by the first train:

Distance of the first train = 65 km/h × 3 hours

Now, let's calculate the distance traveled by the second train. We can use the same formula:

Distance = Speed × Time

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

Using the formula, we can calculate the distance traveled by the second train:

Distance of the second train = 72 km/h × 3 hours

Finally, to find the distance between the trains after 3 hours, we subtract the distance traveled by the second train from the distance traveled by the first train:

Distance between the trains = Distance of the first train - Distance of the second train

Let's calculate the distances and find the answer.

Calculation

Distance of the first train = 65 km/h × 3 hours = 195 kmDistance of the second train = 72 km/h × 3 hours = 216