Question

Помогите решить задачу на уравнение. Двигаясь со скоростью 85км/ч,автомобиль доехал от пункта А до пункта Б за 2,4 ч.С какой скоростью должен двигаться автомобиль,чтоб ы преодолеть это расстояние за 1,7 ч?

Answer 1

85×2.4=204км расстояние
204÷1.7=120км/ч должная скорость

Answer 2

Problem Analysis

We are given that a car traveled from point A to point B at a speed of 85 km/h and took 2.4 hours to complete the journey. We need to find the speed at which the car should travel to cover the same distance in 1.7 hours.

Solution

To solve this problem, we can use the formula: speed = distance / time.

Let's denote the distance from point A to point B as d.

Given that the car traveled from point A to point B at a speed of 85 km/h and took 2.4 hours, we can write the equation as:

85 = d / 2.4 To find the speed at which the car should travel to cover the same distance in 1.7 hours, we can use the same equation:

speed = d / 1.7

To solve for the speed, we need to find the value of d. We can rearrange equation to solve for d:

d = 85 * 2.4 Now, we can substitute the value of d into the equation speed = d / 1.7 to find the required speed.

Let's calculate the value of d first:

d = 85 * 2.4 = 204 Now, we can substitute the value of d into the equation speed = d / 1.7:

speed = 204 / 1.7

Calculating this expression, we find:

speed ≈ 120 km/h

Therefore, the car should travel at a speed of approximately 120 km/h to cover the same distance from point A to point B in 1.7 hours.

Answer

To cover the distance from point A to point B in 1.7 hours, the car should travel at a speed