Question

Два автомобиля одновременно выехали из одного пункта в противоположных направлениях .один автомобиль был в пути 9 ч,другой 4 ч .расстояние между ними стало 936 км.сколько километров проехал каждый автомобиль .если известно ,что их скорости были равны? Помогите !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Answer 1

9+4=13 часов были в пути автомобили
936:13=72 км/ч скорость
72*9=648 км проехал первый автомобиль
72*4=288 км проехал второй автомобиль

Answer 2

Problem Analysis

We have two cars that start from the same point and travel in opposite directions. One car travels for 9 hours, and the other car travels for 4 hours. The distance between them becomes 936 km. We need to find the distance traveled by each car, assuming their speeds are equal.

Solution

Let's assume the speed of each car is x km/h.

The distance traveled by the first car can be calculated using the formula distance = speed * time. Therefore, the distance traveled by the first car is 9x km.

Similarly, the distance traveled by the second car is 4x km.

According to the problem, the sum of the distances traveled by both cars is equal to 936 km. Therefore, we can write the equation:

9x + 4x = 936

Simplifying the equation:

13x = 936

Now, we can solve for x:

x = 936 / 13

Evaluating the expression:

x ≈ 72 km/h

Therefore, each car traveled:

- The first car traveled 9 * 72 = 648 km - The second car traveled 4 * 72 = 288 km

So, the first car traveled 648 km, and the second car traveled 288 km.

Answer

The first car traveled approximately 648 km, and the second car traveled approximately 288 km.