Question

Помогите решить.Условие все по порядку и объяснением..легковой и грузовой автомобиль выехали одновременно навстречу друг другу из пунктов D и C ,расстояние между которыми 238,68 км.Найдите скорость каждого автомобиля,если скорость грузового автомобиля на 25,3 км/ч меньше скорости легкового автомобиля и встретились они через 1,8ч после выезда.

Answer 1

238,68/1,8=132,6 суммарная скорость
132,6/2+25,3/2=78,95 легковой
132,6/2-25,3/2=53,65 грузовой

Answer 2

Problem Analysis

We are given that a passenger car and a truck start simultaneously from points D and C, respectively, and travel towards each other. The distance between points D and C is 238.68 km. We need to find the speed of each vehicle if the speed of the truck is 25.3 km/h less than the speed of the passenger car, and they meet 1.8 hours after starting.

Solution

Let's assume the speed of the passenger car is x km/h. Since the speed of the truck is 25.3 km/h less than the speed of the passenger car, the speed of the truck is x - 25.3 km/h.

We can use the formula speed = distance / time to find the speed of each vehicle.

The time taken for both vehicles to meet is 1.8 hours.

The distance traveled by the passenger car is the sum of the distances traveled by both vehicles, which is equal to the total distance between points D and C (238.68 km).

Using the formula speed = distance / time, we can set up the following equations:

For the passenger car: x = 238.68 / 1.8 km/h

For the truck: (x - 25.3) = 238.68 / 1.8 km/h

Now, let's calculate the speed of each vehicle.

Calculation

For the passenger car: x = 238.68 / 1.8 km/h

For the truck: (x - 25.3) = 238.68 / 1.8 km/h

Using the given values, we can calculate the speeds of the passenger car and the truck.

Answer

The speed of the passenger car is approximately 132.6 km/h and the speed of the truck is approximately 107.3 km/h.

Please note that these values are approximate due to rounding.

Let me know if you need any further assistance!