Question

Из одного города в противоположных направлениях одновременно выехали два автомобиля.Скорость одного из них была 74 км/ч,что на 8 км/ч больше,чем скорость другого.Какое расстояние будет между ними через 7 ч после начала движения?

Answer 1

1) 74-8=66 км/ч скорость второго автомобиля
2) 66+74=140 км/ч скорость удаления автомобилей
3) 140*7=980 км будет расстояние между ними через 7 часов после начала движения.

Ответ 980 км

Answer 2

Problem Analysis

Two cars are traveling in opposite directions from the same city. The speed of one car is 74 km/h, which is 8 km/h faster than the speed of the other car. We need to find the distance between them after 7 hours of travel.

Solution

To find the distance between the two cars after 7 hours, we need to calculate the total distance traveled by both cars.

Let's assume the speed of the slower car is x km/h. The speed of the faster car is then x + 8 km/h.

The distance traveled by the slower car in 7 hours is 7x km, and the distance traveled by the faster car in 7 hours is 7(x + 8) km.

The total distance between the two cars after 7 hours is the sum of these distances.

Calculation

Let's calculate the distance between the two cars after 7 hours.

The distance traveled by the slower car in 7 hours is 7x km.

The distance traveled by the faster car in 7 hours is 7(x + 8) km.

The total distance between the two cars after 7 hours is 7x + 7(x + 8) km.

Simplifying the expression, we get 14x + 56 km.

Answer

The distance between the two cars after 7 hours of travel is 14x + 56 km.

Please note that we don't have enough information to determine the exact distance between the two cars without knowing the speed of the slower car.