Question

В трех школах 3600 учащихся в первой в два раза меня чем во второй,а в третьей на 80учеников больше чем в первой.сколько учеников в первой школе?решите с помощью уравнения пожалуйста

Answer 1

Тогда так:
1 школа x
2 школа 2х
3 школа на 80 больше чем 1
2x+x=3600-80
3x=3540
x=3540:3
x=1180(1 школа)
2 шк. 1180 *2 =2360
3 шк. 1180+80 =1260

Answer 2

Problem Analysis

We are given information about three schools and the number of students in each school. We need to find the number of students in the first school. Let's analyze the given information:

- In the first school, there are twice as many students as in the second school. - In the third school, there are 80 more students than in the first school. - The total number of students in the three schools is 3600.

Solution

Let's assume the number of students in the second school is x. According to the given information, the number of students in the first school is twice the number of students in the second school, so it is 2x. The number of students in the third school is 80 more than the number of students in the first school, so it is 2x + 80.

The total number of students in the three schools is 3600, so we can write the equation:

x + 2x + (2x + 80) = 3600

Now, let's solve this equation to find the value of x.

Solving the Equation

Combining like terms, we have:

5x + 80 = 3600

Subtracting 80 from both sides, we get:

5x = 3520

Dividing both sides by 5, we get:

x = 704

Answer

Therefore, the number of students in the first school is 2x = 2 * 704 = 1408.

So, there are 1408 students in the first school.

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