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 7ч после начала движения?

Answer 1

1)74-8=66-скорость второго
2)(74*7)+(66*7)=518+462=980 км будет между ними

Answer 2

Problem Analysis

We are given that two cars start simultaneously from the same city in opposite directions. 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.

Solution

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

To find the distance between the two cars after 7 hours, we can use the formula:

Distance = Speed × Time

For the slower car: Distance of the slower car = x km/h × 7 h

For the faster car: Distance of the faster car = (x + 8) km/h × 7 h

The total distance between the two cars is the sum of their individual distances:

Total distance = Distance of the slower car + Distance of the faster car

Let's calculate the total distance.

Calculation

Distance of the slower car = x km/h × 7 h

Distance of the faster car = (x + 8) km/h × 7 h

Total distance = Distance of the slower car + Distance of the faster car

Answer

The distance between the two cars after 7 hours will be (x km/h × 7 h) + ((x + 8) km/h × 7 h).

Please note that we don't have the specific values for the speeds of the cars, so we cannot calculate the exact distance. However, we can provide the formula to calculate the distance based on the given speeds.