Question

От двух вокзалов одновременно навстречу друг другу отправились дв товарных поезда ,скорость одного 50км/ч,а другово 40км/ч. Черех два часа после отправления они уже находились друг от друга на расстояни 15 км. Вычисли расстояние между вокзалами .

Answer 1

50 + 40 = 90 (км\ч) скорость сближения.
90 х 2 = 180 (км) проехали до встречи оба поезда
180 +15 =195(км) расстояние между вокзалами
            Ответ: 195 км.

Answer 2

1)50*2=100(км)-прошел первый тов.поезд.
2)40*2=80(км)-прошел второй тов.поезд.
3)100+80+15=195(км)
Ответ: расстояние между вокзалами составляет 195 км.

Answer 3

Problem Analysis

Two freight trains are traveling towards each other from two different stations. The first train has a speed of 50 km/h, and the second train has a speed of 40 km/h. After two hours from their departure, they are already 15 km apart. We need to calculate the distance between the two stations.

Solution

Let's denote the distance between the two stations as D. We know that the combined distance traveled by the two trains after two hours is 15 km. We can use the formula: Distance = Speed × Time

The distance traveled by the first train in 2 hours is 50 km/h × 2 h = 100 km. The distance traveled by the second train in 2 hours is 40 km/h × 2 h = 80 km.

The sum of these distances is equal to the distance between the two stations: 100 km + 80 km = 180 km

Therefore, the distance between the two stations is 180 km.

Final Answer

The distance between the two stations is 180 km.