Question

Товарный и пассажирский поезда движутся в противоположных направлениях. Скорость товарного поезда 42 км/ч а пассажирского на 32 км/ч больше. Сейчас между ними 20,6 км. Какое расстояние будет между ними через 0,4ч?

Answer 1

1)42+32=74 км/час скорость пассажирского 2)42+74=116 км/час скорость удаления 3)116*0,4=46,4 км пройдут за 0,4 часа 4)20,6+46,4=67 км будет расстояние между ними

Answer 2

Problem Analysis

We are given the speeds of a freight train and a passenger train, as well as the initial distance between them. We need to determine the distance between them after a certain amount of time.

Given Information

- Speed of the freight train: 42 km/h - Speed of the passenger train: 32 km/h - Initial distance between the trains: 20.6 km - Time elapsed: 0.4 hours

Solution

To find the distance between the trains after 0.4 hours, we need to calculate the distance each train has traveled during this time and subtract the initial distance between them.

Let's calculate the distance traveled by each train: - Distance traveled by the freight train = speed of the freight train * time elapsed - Distance traveled by the passenger train = speed of the passenger train * time elapsed

Now, let's calculate the final distance between the trains: - Final distance = initial distance - (distance traveled by the freight train + distance traveled by the passenger train)

Calculation

Given: - Speed of the freight train = 42 km/h - Speed of the passenger train = 32 km/h - Initial distance between the trains = 20.6 km - Time elapsed = 0.4 hours

Calculations: