Question

Из одного города в другой расстояние между которыми меньше 300 километров выехал поезд. через 3 часа ему осталось проехать еще 45 километров оцените скорость поезда. Решите задачу с помощью неравенства.

Answer 1

Х-скорость поезда
3х+45<300
3х<300-45
3х<255
х<85 км/ч

Answer 2

1) 300-45=255(км)- проехал за 3
часа поезд.
2) 255:3=85(км)- скорость поезда.
Ответ; 85км.

Answer 3

Problem Analysis

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

Given: - Distance remaining = 45 km - Time remaining = 3 hours

We can use the above formula to calculate the speed of the train.

Solution Using Inequality

Let's use the inequality to solve the problem. The inequality for speed, distance, and time is as follows: speed = distance / time

Given: - Distance remaining = 45 km - Time remaining = 3 hours

We can use the inequality speed <= distance / time to find the maximum speed of the train.

Calculating the Speed

Using the given information, we can calculate the speed of the train as follows: speed <= 45 km / 3 hours

Now, let's calculate the speed: speed <= 15 km/h

So, the maximum speed of the train is 15 km/h.

Therefore, the train's speed is estimated to be 15 km/h based on the given information and the inequality.

I hope this helps! If you have further questions or need additional assistance, feel free to ask.