Question

Два автомобиля ехали в противоположном стороны с одинаковой скоростью. Первый был в пути 7 часов а второй 9 часов и проехал на 180 км больше. На каком растояние находятся автомобили? Пять действий должно быть

Answer 1

1) 9 - 7 = 2 часа(на 2 часа больше второй автомобиль ехал чем первый)
2) 180 : 2 = 90 км/ч скорость автомобилей
3) 9 *90  = 810 км проехал второй автомобиль 
4) 7*90 = 630 км проехал первый автомобиль 
5) 810 +630 = 1440 км расстояние между автомобилями

Answer 2

Problem Analysis

To solve this problem, we need to find the distance between two cars that traveled for different durations at the same speed. The first car traveled for 7 hours, and the second car traveled for 9 hours. The second car covered 180 km more than the first car.

Solution

Let's denote the speed of each car as s and the distance traveled by the first car as d. We can use the formula distance = speed × time to find the distance traveled by each car.

1. The distance traveled by the first car is 7s. 2. The distance traveled by the second car is 9s.

We are given that the second car traveled 180 km more than the first car, so we can write the equation:

9s = 7s + 180

Let's solve for s to find the speed of each car.

Calculation

Subtracting 7s from both sides of the equation gives us:

9s - 7s = 180

Simplifying, we get:

2s = 180

Dividing both sides by 2:

s = 90

Now that we have the speed of each car, we can find the distance traveled by each car.

1. The distance traveled by the first car is 7s = 7 × 90 = 630 km. 2. The distance traveled by the second car is 9s = 9 × 90 = 810 km.

Answer

Therefore, the two cars are 630 km apart.

I hope this helps! If you have further questions, feel free to ask.