Question

За контрольную работу 6 человек получили отметку-5, 10 человек-4, а остальные четверо-3.Сколько процентов всех учащихся получили отметку-5,сколько-4,и сколько-3? Через отношение Заранее спасибо!

Answer 1

1) 6+10+4 = 20 (человек) - всего
2)  
6 человек  - х %
20 человек  -100 %
6:20= х:100
20х=6*100
х=600:20
х= 30 %  -   получили "5".
3)
10 человек - х%
20 человек - 100%
10:20= х:100
20х=10*100
х=1000:20
х= 50 %  - получили  "4"
4) 
4 человека - х%
20 человек - 100%
4:20= х:100
20х=400
х=400:20
х=20 %   - получили " 3"

Ответ: 30% - "5" ;  50% - "4"  ; 20%- "3".

или
6+10+4=20 чел. - всего
6/20  *100% = 0,3 *100% =30 %   - "5"
10/20  *100% = 0,5 *100 % = 50% - "4"
4/20 *100% = 0,2*100%= 20% - "3"

Ответ:  30 %  - "5" ;  50% - "4"  ;  20% - "3".

Answer 2

Всего людей 6+10+4=20
20 - 100 %
6 - 30 % (получили 5)
10 - 50 % (получили 4)
4 - 20 % (получили 3)

Answer 3

Calculation of Percentages for Each Grade

To calculate the percentages of students who received each grade, we need to know the total number of students. Unfortunately, the total number of students is not provided in the question. Therefore, it is not possible to determine the exact percentages for each grade without this information.

However, we can provide an example calculation based on the given data. Let's assume there are 24 students in total (6 students received a grade of 5, 10 students received a grade of 4, and the remaining 4 students received a grade of 3).

To calculate the percentages, we divide the number of students who received each grade by the total number of students and multiply by 100.

- Grade 5: 6 students received a grade of 5. Assuming there are 24 students in total, the percentage of students who received a grade of 5 would be (6/24) * 100 = 25%. - Grade 4: 10 students received a grade of 4. Assuming there are 24 students in total, the percentage of students who received a grade of 4 would be (10/24) * 100 = 41.67% (rounded to two decimal places). - Grade 3: 4 students received a grade of 3. Assuming there are 24 students in total, the percentage of students who received a grade of 3 would be (4/24) * 100 = 16.67% (rounded to two decimal places).

Please note that these percentages are based on the assumption that there are 24 students in total. If the actual total number of students is different, the percentages will change accordingly.

Unfortunately, without the total number of students, we cannot provide the exact percentages for each grade.