Question

расстояние между двумя городами поезд преодолел за 7 часов, а легковая машина за 3 часа. Найти скорость поезда и скорость легковой машины если скорость поезда меньше легковой машины на 36 км. в час.

Answer 1

х-скорость машины, х-36-скорость поезда 

7*(х-36)=3х

7х-252=3х

4х=252

х=63

63 км/ч  скорость машины

63-36=27 км/ч   скорость поезда

ответ:63 и 27

 

 

 

 

 

 

 

 

 

 

 

 

Answer 2

Problem Analysis

We are given that a train covers a distance between two cities in 7 hours, while a car covers the same distance in 3 hours. The train's speed is 36 km/h slower than the car's speed. We need to find the speeds of both the train and the car.

Solution

Let's assume the speed of the car is x km/h. Since the train's speed is 36 km/h slower, the speed of the train is x - 36 km/h.

We can use the formula speed = distance / time to find the speeds of the train and the car.

Train's Speed

The train covers the distance in 7 hours, so we have the equation: x - 36 = distance / 7

Car's Speed

The car covers the same distance in 3 hours, so we have the equation: x = distance / 3

Solving the Equations

To solve the equations, we can set them equal to each other and solve for the distance: distance / 7 = distance / 3

Multiplying both sides by 7 and 3, we get: 3 * distance = 7 * distance

Simplifying, we get: 3 * distance - 7 * distance = 0 -4 * distance = 0

Since the distance cannot be zero, we can conclude that there is no solution to this problem. The given information is contradictory.

Conclusion

Based on the given information, there is no solution to find the speeds of the train and the car. The problem is contradictory.

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