Question

Из двух городов , расстояние между которыми 420 км\ч навстречу друг другу выехали одновременно две машины и встретились через 3 ч. Скорость одной машины 60 км\ч. с какой скоростью ехала другая машина? уравнением решите задачу

Answer 1

Первая машина проехала за 3 часа 60х3=180 км

вторая проехала 420-180=240 км

значит он ехал со скоростью 240:3=80 км/ч

Answer 2

Это задача на сближение
V1 = 60
V2 = X
Vсближения = 60+х
S=V*T   =>    T=S/V    420:(60+X)=3
                                   60+3=420:3
                                   60+X=140
                                   X=140-60
                                   X=80

Answer 3

Problem Analysis

We have two cars that start from two different cities and travel towards each other. The distance between the cities is 420 km. The two cars meet each other after 3 hours. We know the speed of one car is 60 km/h. We need to find the speed of the other car.

Solution

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

We can use the formula: distance = speed × time to solve this problem.

The distance traveled by the first car is 60 km/h × 3 hours = 180 km.

The distance traveled by the second car is x km/h × 3 hours = 3x km.

Since the two cars meet each other, the sum of the distances traveled by both cars should be equal to the total distance between the cities, which is 420 km.

So, we can write the equation: 180 km + 3x km = 420 km.

To solve this equation, we need to isolate x.

Subtracting 180 km from both sides of the equation, we get: 3x km = 420 km - 180 km.

Simplifying, we have: 3x km = 240 km.

Finally, dividing both sides of the equation by 3, we find: x km/h = 240 km / 3 hours.

Let's calculate the value of x.

Calculation

To find the value of x, we divide 240 km by 3 hours:

x km/h = 240 km / 3 hours = 80 km/h.

Answer

Therefore, the other car was traveling at a speed of 80 km/h.

Note: The answer is based on the information provided and the assumption that the speed of the first car remains constant throughout the journey.