Question

машина ехала по ровной дороге с постоянной скоростью.на спуске её скорость увеличилась в 2 раза.затем на подъёме её скорость уменьшилась на 25км/ч и стала равной 95 км/ч. с какой скоростью машина ехала по ровной дороге? С уравнением без уровнение Ошибка, помогите плизз) спс!

Answer 1

Х*2-25=95
2х-25=95
2х=95+25
2х=120
х=120:2
х=60 км/ч ехала машина по ровной дороге

Answer 2

Problem Analysis

We are given that a car was traveling on a flat road at a constant speed. On a downhill slope, its speed doubled, and on an uphill slope, its speed decreased by 25 km/h and became 95 km/h. We need to determine the speed of the car on the flat road.

Solution

Let's assume the speed of the car on the flat road is x km/h.

On the downhill slope, the speed of the car doubled, so it became 2x km/h.

On the uphill slope, the speed of the car decreased by 25 km/h and became 95 km/h. So, we can set up the equation:

2x - 25 = 95

To find the value of x, we can solve this equation.

Solving the Equation

Let's solve the equation 2x - 25 = 95 to find the value of x.

Adding 25 to both sides of the equation:

2x - 25 + 25 = 95 + 25

Simplifying:

2x = 120

Dividing both sides of the equation by 2:

2x / 2 = 120 / 2

Simplifying:

x = 60

Therefore, the speed of the car on the flat road is 60 km/h.

Answer

The car was traveling on the flat road at a speed of 60 km/h.

Note: The search results did not provide a direct answer to the question. The solution was derived using mathematical reasoning.