Question

Маша учится в пятом классе.В этом классе мальчиков в два раза меньше ,чем девочек.У Маши одноклассниц на 10 больше,чем одноклассников.Сколько учеников в классе?

Answer 1

Решаем вместе.
Неизвестных два - М и Д. Пишем два уравнения.
1) Д = 2*М - девочек в 2 раза больше.
2) Д-1= М+10 - одноклассниц (кроме самой Маши) больше на 10. 
Упрощаем ур 2) и подставим ур. 1) и получим 
3) 2*М -1 = М +10
3а) М = 11 - мальчиков - ответ/2
И теперь вычисляем девочек
4) Д= 2*М = 22 - девочек - ответ/2.
И, наконец, ответ
5) КЛАСС = М+Д = 11+22= 33 чел - ОТВЕТ.

Answer 2

Problem Analysis

We are given the information that Masha is studying in the fifth grade. In her class, the number of boys is two times less than the number of girls. Additionally, Masha has 10 more female classmates than male classmates. We need to determine the total number of students in the class.

Solution

Let's assume the number of boys in the class is x. Since the number of boys is two times less than the number of girls, the number of girls in the class would be 2x.

According to the given information, Masha has 10 more female classmates than male classmates. This means that the number of girls in the class is x + 10 and the number of boys is x.

To find the total number of students in the class, we need to add the number of boys and girls together:

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

Total number of students = x + (x + 10)

Simplifying the equation:

Total number of students = 2x + 10

Now, we can solve for the value of x to find the total number of students in the class.

Calculation

Let's solve the equation to find the value of x:

2x + 10 = Total number of students

Since we don't have the exact value of the total number of students, we cannot determine the exact value of x or the total number of students in the class without additional information.

Please provide the exact value of the total number of students in the class, and I will be able to calculate the number of boys and girls accordingly.

If you have any additional information or questions, please let me know!