Question

В школе 1200 учеников.Девочки составляют 45% всех учеников.Сколько мальчиков учатся в этой школе? ЗАДАЧА ДЛЯ 5класса.Л.Г.Петерсон.

Answer 1

1.1200-100%
Х=45%
Х=1200*45/100
Х=540(девочки)
2. 1200-540=660(мальчиков)
Ответ:660

Answer 2

45% это 540 девочек 1200 -540=660малчиков

Answer 3

Task: Finding the Number of Boys in the School

To find the number of boys in the school, we can start by determining the percentage of boys in the school based on the given information that girls make up 45% of all students.

Calculation:

We know that the total number of students in the school is 1200 and girls make up 45% of all students.

So, the percentage of boys in the school is 100% - 45% = 55%.

Now, we can calculate the number of boys in the school using this percentage.

Solution:

The number of boys in the school is 55% of 1200.

55% of 1200 = (55/100) * 1200 = 660.

Therefore, there are 660 boys studying in this school.

This calculation is based on the given information and the percentage of girls in the school