Question

Б. Из пункта A в одно и то же время в противоположных направлениях отправились два товарных поезда. Первый поезд направился в пункт B со скоростью 67 км/ч. Второй поезд направился в пункт C со скоростью на 7 км/ч больше, чем скорость первого поезда. Через 14 часа(-ов) поезда прибыли в пункты назначения. Какое расстояние между пунктами B и C?

Answer 1

Ответ:

1 974 км расстояние между В и С

Пошаговое объяснение:

67 + 7 = 74 км/ч скорость второго поезда

67 + 74 = 141 км/ч скорость удаления друг от друга двух поездов

141 * 14 = 1 974 км расстояние между В и С  

Или так:

Каждый поезд был в пути 14 часов:

67*14 + 74*14 = 938 + 1036 = 1 974 км расстояние между В и С  

Answer 2

Problem Analysis

We have two freight trains traveling from point A to their respective destinations, points B and C. The first train travels at a speed of 67 km/h, while the second train travels at a speed 7 km/h faster than the first train. After 14 hours, both trains arrive at their destinations. We need to find the distance between points B and C.

Solution

Let's start by finding the speed of the second train. We know that the second train's speed is 7 km/h faster than the first train's speed, which is 67 km/h. Therefore, the speed of the second train is 67 km/h + 7 km/h = 74 km/h.

Next, we can calculate the distance traveled by each train using the formula: distance = speed * time.

The first train travels at a speed of 67 km/h for 14 hours, so the distance traveled by the first train is 67 km/h * 14 hours = 938 km.

The second train travels at a speed of 74 km/h for 14 hours, so the distance traveled by the second train is 74 km/h * 14 hours = 1036 km.

Finally, we can find the distance between points B and C by subtracting the distance traveled by the first train from the distance traveled by the second train: 1036 km - 938 km = 98 km.

Therefore, the distance between points B and C is 98 km.

Answer

The distance between points B and C is 98 km.