Question

Из двух городов расстояние между которыми 75 км,отправились одновременно в противоположных направлениях два поезда.один шёл со скоростью 75км/ч другой 80км/.какое расстояние будет между поездами за 3 часа?

Answer 1

Сейчас между ними 75 км
в час они удаляются друг от друга на 75+80=155 км
за 3 часа на 155*3=465 км
значит расстояние между ними будет 465+75=540 км

Answer 2

Думаю правильно решено

Answer 3

Problem Analysis

We have two trains traveling in opposite directions. One train is traveling at a speed of 75 km/h, and the other train is traveling at a speed of 80 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 can calculate the total distance covered by both trains and then subtract the initial distance between them.

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

- Train 1: Speed = 75 km/h, Time = 3 hours - Distance covered by Train 1 = Speed * Time = 75 km/h * 3 hours = 225 km

- Train 2: Speed = 80 km/h, Time = 3 hours - Distance covered by Train 2 = Speed * Time = 80 km/h * 3 hours = 240 km

Now, let's calculate the distance between the trains after 3 hours:

- Initial distance between the trains = 75 km (given) - Distance covered by Train 1 = 225 km - Distance covered by Train 2 = 240 km

Total distance covered by both trains = Distance covered by Train 1 + Distance covered by Train 2 = 225 km + 240 km = 465 km

Distance between the trains after 3 hours = Total distance covered by both trains - Initial distance between the trains = 465 km - 75 km = 390 km

Therefore, the distance between the trains after 3 hours will be 390 km.

Answer

The distance between the trains after 3 hours will be 390 km.