Question

В школе 800 учеников, из них 30% - ученики начальной школы. Среди учеников средней и старшей школы 20% изучают немецкий язык. Сколько учеников в школе изучают немецкий язык, если в начальной школе немецкий язык не изучается? ​

Answer 1

Ответ:

Пошаговое объяснение:

800*30%:100%=240(ученики начальной школы)

800-240=560(ученики средней и старшей школы)

560*20%:100%=112(учеников в школе изучают немецкий)

Answer 2

112 , 800-100%
8*70=560-средняя и старшая
560-100
х-20
х=112 человек

Answer 3

Calculation of the Number of Students Studying German in the School

To calculate the number of students studying German in the school, we need to consider the total number of students and the percentage of students studying German in the middle and high school.

Given: - Total number of students in the school: 800 - Percentage of students in the elementary school: 30% - Percentage of students studying German in the middle and high school: 20%

To find the number of students studying German in the school, we can follow these steps:

1. Calculate the number of students in the elementary school: - Number of students in the elementary school = Total number of students * Percentage of students in the elementary school - Number of students in the elementary school = 800 * 0.30

2. Calculate the number of students in the middle and high school: - Number of students in the middle and high school = Total number of students - Number of students in the elementary school - Number of students in the middle and high school = 800 - (800 * 0.30)

3. Calculate the number of students studying German in the middle and high school: - Number of students studying German in the middle and high school = Number of students in the middle and high school * Percentage of students studying German in the middle and high school - Number of students studying German in the middle and high school = (800 - (800 * 0.30)) * 0.20

4. Add the number of students studying German in the middle and high school to the number of students in the elementary school to get the total number of students studying German in the school.

Let's calculate the values:

1. Number of students in the elementary school: - Number of students in the elementary school = 800 * 0.30 = 240 students

2. Number of students in the middle and high school: - Number of students in the middle and high school = 800 - (800 * 0.30) = 560 students

3. Number of students studying German in the middle and high school: - Number of students studying German in the middle and high school = (800 - (800 * 0.30)) * 0.20 = 112 students

4. Total number of students studying German in the school: - Total number of students studying German in the school = Number of students in the elementary school + Number of students studying German in the middle and high school - Total number of students studying German in the school = 240 + 112 = 352 students

Therefore, there are 352 students in the school who study German, considering that the elementary school does not offer German language classes.