Question

Если бы каждый мальчик получил на 3 бала больше , то средний результат класса был бы на 1,2 бала выше чем сейчас.Сколько процентов составляют в этом классе девочки?

Answer 1

1,2 / 3 * 100%=40% мальчиков

100% - 40% = 60% девочек

             Ответ:в класее 60% девочек

Answer 2

Calculation of the Average Result

To solve this problem, we can set up an equation based on the given information. Let's assume that the current average result of the class is x. According to the problem statement, if each boy received 3 more points, the new average result would be x + 1.2.

We can set up the equation as follows:

(x + 3) = (x + 1.2)

Simplifying the equation, we get:

x + 3 = x + 1.2

Subtracting x from both sides, we get:

3 = 1.2

This equation is not possible, as it leads to a contradiction. Therefore, there is an error in the problem statement or the given information.

Unfortunately, based on the information provided, we cannot determine the percentage of girls in the class. If you have any additional information or clarification, please let me know, and I'll be happy to assist you further.