Question

Решите задачу,составив числовое выражение. Два автомобиля выехали в одно время из двух городов,расстояние между которыми 450 км.Один из них проезжал в час 40 километров.Автомобили встретились через пять часов.С какой скоростью ехал второй автомобиль

Answer 1

1.40 км\ч*5ч=200км-проехал 1 авто

2.450км-200 км=250км-проехал 2 авто

3.250 км\ч/5ч=50 км\ч-скорость 2 авто

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числовое,значит чтобы были тоько числа,а для решения нужно буквенное

Answer 2

Problem Analysis

We have two cars that start at the same time from two different cities, and the distance between the cities is 450 km. We know that one car travels at a speed of 40 km/h and they meet after five hours. We need to find the speed of the second car.

Solution

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

We can calculate the distance traveled by the first car using the formula: distance = speed * time. Since the first car travels at a speed of 40 km/h for 5 hours, the distance traveled by the first car is 40 * 5 = 200 km.

The distance traveled by the second car can be calculated by subtracting the distance traveled by the first car from the total distance between the cities: 450 - 200 = 250 km.

Now, we can calculate the speed of the second car using the formula: speed = distance / time. The time taken by the second car to cover a distance of 250 km is 5 hours, so the speed of the second car is 250 / 5 = 50 km/h.

Therefore, the second car was traveling at a speed of 50 km/h.

Answer

The second car was traveling at a speed of 50 km/h.