Question

Два автомобиля вышли одновременно на встречу друг другу из двух городов расстояние между которыми 524 км. На каком расстояние друг от друга окажутся автомобили через 3 часа, если скорость первого автомобиля 58 км в час и она на 7 км в час меньше скорости второго? Помогите плиз!

Answer 1

58 км/ч+7 км/ч=65 км/ч (скорость второго)
58 км/ч+65 км/ч=123 км/ч (скорость сближения)
123 км/ч*3 ч=369 км (проехали оба за 3 часа)
524 км-369 км=155 км
Ответ: через 3 часа между ними будет 155 км

Answer 2

Problem Analysis

We have two cars traveling towards each other from two different cities. The distance between the cities is 524 km. The first car is traveling at a speed of 58 km/h, while the second car is traveling at a speed 7 km/h faster than the first car. We need to find the distance between the cars after 3 hours.

Solution

To find the distance between the cars after 3 hours, we need to calculate the total distance traveled by both cars in 3 hours and then subtract the initial distance between the cities.

Let's calculate the distance traveled by each car in 3 hours:

- The first car travels at a speed of 58 km/h for 3 hours, so the distance traveled by the first car is 58 km/h * 3 hours = 174 km. - The second car travels at a speed 7 km/h faster than the first car, so its speed is 58 km/h + 7 km/h = 65 km/h. The distance traveled by the second car in 3 hours is 65 km/h * 3 hours = 195 km.

Now, let's calculate the distance between the cars after 3 hours:

- The total distance traveled by both cars is 174 km + 195 km = 369 km. - Subtracting the initial distance between the cities (524 km) from the total distance traveled, we get 524 km - 369 km = 155 km.

Therefore, the cars will be 155 km apart after 3 hours.

Answer

The cars will be 155 km apart after 3 hours.