Question

В классе 30 учеников , Девочки составляют 20 % от всего числа учащихся . Сколько мальчиков в классе

Answer 1

30-20%=24(девочек) 30-24=6(мальчиков)
значит 6 мальчиков

Answer 2

Calculating the Number of Boys in the Class

In a class of 30 students, the girls make up 20% of the total number of students. To find out how many boys are in the class, we can use the following calculation:

Total number of students in the class = 30

Percentage of girls = 20%

To find the number of girls in the class, we can use the following formula: Number of girls = (Percentage of girls / 100) * Total number of students

Let's calculate the number of girls in the class: Number of girls = (20 / 100) * 30 = 0.20 * 30 = 6

Now, to find the number of boys in the class, we can subtract the number of girls from the total number of students: Number of boys = Total number of students - Number of girls Number of boys = 30 - 6 = 24

So, there are 24 boys in the class.

Cited Sources

1. "20 30 , 20 30 , ..." 2. "20 40% . , ..." 3. "20%, 20%. ?" 4. "60% . ?" 5. "20 30 (United Nations, 1998). , ..." 6. "20%, 30%, 20%, 10%."

I hope this helps! If you have any other questions, feel free to ask.