Question

В спортивной секции занимаются из старшей школы девочек в 3 раза больше чем из младшей школы. Всего занимаются 120 девочек. Сколько девочек занимается в спортивной сеции из младшей школы и старшей?

Answer 1

1)120/3=40(девочек младшей школы)
2)120-40=80(девочек старшей школы)

Answer 2

Problem Analysis

We are given the information that the number of girls participating in the sports section from the senior school is three times more than the number of girls participating from the junior school. The total number of girls participating in the sports section is 120. We need to determine how many girls are participating from the junior school and the senior school.

Solution

Let's assume the number of girls participating from the junior school is x.

According to the given information, the number of girls participating from the senior school is three times more than the number of girls participating from the junior school. Therefore, the number of girls participating from the senior school is 3x.

The total number of girls participating in the sports section is 120. So, we can write the equation:

x + 3x = 120

Simplifying the equation, we get:

4x = 120

Dividing both sides of the equation by 4, we find:

x = 30

Therefore, the number of girls participating from the junior school is 30, and the number of girls participating from the senior school is 3 times that, which is 90.

Answer

There are 30 girls participating in the sports section from the junior school, and there are 90 girls participating in the sports section from the senior school.