Question

Из Москвы и Ростова-на-Дону одновременно вышли навстречу друг другу два поезда.Поезд из Москвы шел со скоростью 65км/ч,а поезд из Ростова-на-Дону-со скоростьюна 7км/ч меньшей.На каком расстоянии друг от друга будут поезда через 6ч после начала движения,если расстояние между Москвой и Ростовом-на Дону 1230км?

Answer 1

1)скорость второго поезда

65-7=58 км/час

2)общая скорость поездов

65+58=123 км/час

3)общий путь поездов за 6 часов

123*6=738 км

4)расстояние между поездами через 6 часов

1230-738=492 км

Answer 2

1)65-7=58(км/ч)

2)65+58=123(км/ч)

3)123*6=738(км)

4)1230-738=492(км)

Ответ:На 492 км.

Answer 3

Problem Analysis

We are given that two trains start simultaneously from Moscow and Rostov-on-Don, and we need to find the distance between them after 6 hours. The train from Moscow is traveling at a speed of 65 km/h, while the train from Rostov-on-Don is traveling at a speed 7 km/h slower than the first train. The distance between Moscow and Rostov-on-Don is given as 1230 km.

Calculation

To find the distance between the two trains after 6 hours, we need to calculate the distance traveled by each train.

The train from Moscow travels at a speed of 65 km/h for 6 hours, so the distance traveled by this train is: Distance_Moscow = Speed_Moscow * Time = 65 km/h * 6 h = 390 km.

The train from Rostov-on-Don is traveling at a speed 7 km/h slower than the train from Moscow. Therefore, its speed is 65 km/h - 7 km/h = 58 km/h. The distance traveled by this train is: Distance_Rostov = Speed_Rostov * Time = 58 km/h * 6 h = 348 km.

The total distance between the two trains after 6 hours is the difference between the distances traveled by each train: Distance_Total = Distance_Moscow - Distance_Rostov = 390 km - 348 km = 42 km.

Answer

Therefore, the two trains will be 42 km apart after 6 hours of travel.

Please let me know if I can help you with anything else.