Question

В 7 классе 30учащихся, из которых 18 девочки. Сколько процентов от общего числа учащихся составляют мальчики

Answer 1

1)30-18=12(чел.) - мальчики
2)12:30*100%=40(%) - мальчиков
Ответ: 40%

Answer 2

30-18=12(мальчики) 30-100% 12-?% 12×100:30=40%

Answer 3

Calculating Percentage of Male Students in 7th Grade

To calculate the percentage of male students in the 7th grade, we can use the information provided. There are 30 students in total, with 18 of them being girls. We can calculate the number of boys by subtracting the number of girls from the total number of students.

Number of Boys: 30 (total students) - 18 (girls) = 12 boys

Now, to find the percentage of boys, we can use the following formula:

Percentage = (Number of Boys / Total Number of Students) * 100

Percentage of Boys: = (12 / 30) * 100 = 40%

Therefore, the percentage of boys among the total students is 40%.