Question

в классе число мальчиков относится к числу девочек как 8:5.сколько в этом классе девочек если в нём всего 26 человек?

Answer 1

8+5=13 частей состоит весь класс
26÷13=2 человека в одной части класса
8×2=16 мальчиков в классе
5×2=10 девочек в классе

Answer 2

Calculation of the Number of Girls in the Class

To determine the number of girls in the class, we can use the given ratio of boys to girls, which is 8:5.

Let's set up an equation to solve for the number of girls.

Let x represent the number of girls in the class.

According to the given ratio, the number of boys in the class is 8/5 times the number of girls.

So, the number of boys in the class is (8/5) * x.

The total number of students in the class is given as 26.

Therefore, the equation becomes:

(8/5) * x + x = 26

To solve this equation, we can simplify it:

(13/5) * x = 26

Now, we can solve for x by multiplying both sides of the equation by 5/13:

x = (26 * 5) / 13

Evaluating this expression, we find that the number of girls in the class is approximately 10.

Therefore, there are approximately 10 girls in the class.

Answer:

In the given class, there are approximately 10 girls if there are a total of 26 students and the ratio of boys to girls is 8:5.