Question

1) В классе 20 мальчиков, а девочек на 5 больше. Сколько процентов кла составляют девочки и сколько процентов составляют мальчики?

Answer 1

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Answer 2

Calculation of the Percentage of Boys and Girls in the Class

To calculate the percentage of boys and girls in the class, we need to know the total number of students and the number of boys and girls.

Given that there are 20 boys in the class and the number of girls is 5 more than the number of boys, we can calculate the total number of students as follows:

Total number of students = Number of boys + Number of girls

Number of girls = Number of boys + 5

Substituting the value of the number of girls into the equation for the total number of students, we get:

Total number of students = Number of boys + (Number of boys + 5)

Simplifying the equation, we have:

Total number of students = 2 * Number of boys + 5

To calculate the percentage of boys and girls, we can use the following formulas:

Percentage of boys = (Number of boys / Total number of students) * 100

Percentage of girls = (Number of girls / Total number of students) * 100

Let's calculate the percentages using the given information:

Total number of students = 2 * 20 + 5 = 45

Percentage of boys = (20 / 45) * 100 = 44.44%

Percentage of girls = (25 / 45) * 100 = 55.56%

Therefore, the percentage of boys in the class is approximately 44.44% and the percentage of girls is approximately 55.56%.