Question

Помогите пожалуйста решить задачу. расстояние между селом и городом равно 300 км. из них одновременно выехали грузовая и легковая машины. через 2 часа они встретились. какова скорость легковой машины если скорость грузовой машины равна 60 км в час?

Answer 1

300 : 2 = 150 (км/ч) - скорость сближения.
150 - 60 = 90 (км/ч) - скорость легковой машины.
Ответ: 90 км/ч.

Answer 2

300÷2ч=150 - vсбл.
150-60=90

Answer 3

Problem Analysis

We are given that the distance between a village and a city is 300 km. A cargo truck and a car start simultaneously from the village and the city, respectively. After 2 hours, they meet each other. We need to find the speed of the car, given that the speed of the cargo truck is 60 km/h.

Solution

Let's assume the speed of the car is x km/h. Since the car and the cargo truck meet after 2 hours, we can calculate the distance traveled by each vehicle in that time.

The distance traveled by the car in 2 hours is 2x km, and the distance traveled by the cargo truck in 2 hours is 2 * 60 = 120 km.

Since the total distance between the village and the city is 300 km, the sum of the distances traveled by the car and the cargo truck should be equal to 300 km.

So, we can set up the following equation:

2x + 120 = 300

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

Calculation

Let's solve the equation:

2x + 120 = 300

Subtract 120 from both sides:

2x = 300 - 120

Simplify:

2x = 180

Divide both sides by 2:

x = 90

Answer

The speed of the car is 90 km/h.

Please let me know if I can help you with anything else.