Question

Из двух городов расстояние между которыми 600 км одновременно выехали навстречу друг другу два автомобиля которые встретились через 4 часа один автомобиль ехал со скоростью 70 км в час какова скорость второго автомобиля

Answer 1

Ответ:

Пошаговое объяснение:

По идее вот так вот будет.

1) 600 :4 =150 (км/ч) -средняя скорость

2) 150 - 70 =80 (км/ч) - скорость второго автомобиля

Ответ : 80 км/ч  скорость второго автомобиля.  

Answer 2

Problem Analysis

We have two cars that start from two different cities and travel towards each other. The distance between the cities is 600 km. One car travels at a speed of 70 km/h. We need to find the speed of the second car.

Solution

Let's assume the speed of the second car is x km/h. Both cars are traveling towards each other, so their combined speed is the sum of their individual speeds. The total time taken for the two cars to meet is 4 hours.

We can use the formula: distance = speed × time to calculate the distance traveled by each car.

For the first car: - Speed = 70 km/h - Time = 4 hours - Distance = Speed × Time = 70 km/h × 4 hours = 280 km

For the second car: - Speed = x km/h - Time = 4 hours - Distance = Speed × Time = x km/h × 4 hours = 4x km

Since the total distance traveled by both cars is equal to the distance between the cities (600 km), we can write the equation:

280 km + 4x km = 600 km

Simplifying the equation:

4x km = 600 km - 280 km 4x km = 320 km

Dividing both sides of the equation by 4:

x km = 320 km / 4 x km = 80 km/h

Therefore, the speed of the second car is 80 km/h.

Answer

The speed of the second car is 80 km/h.