Question

На кружок по программированию записались семиклассники и восьмиклассники. Количество семиклассников,записавшихся на кружок, относиться к количеству восьмиклассников как 5:2 соответственно. Среди записавшихся на кружок 25 семиклассников. Сколько восьмиклассников записались на кружок про программ?​

Answer 1

Ответ:

5:2=2,5

25:2,5=10(восьмикласников)

Answer 2

Solution:

To solve this problem, we can use the given ratio of the number of seventh graders to the number of eighth graders and the information about the number of seventh graders who signed up for the programming club.

Let's denote the number of seventh graders as 5x and the number of eighth graders as 2x based on the given ratio.

Given that there are 25 seventh graders who signed up for the programming club, we can set up the following equation:

5x = 25

Solving for x will give us the value of x, and then we can find the number of eighth graders who signed up for the programming club.

Calculation:

- Using the equation 5x = 25, we can solve for x: - x = 25 / 5 - x = 5

Now that we have the value of x, we can find the number of eighth graders who signed up for the programming club: - Number of eighth graders = 2x - Number of eighth graders = 2 * 5 - Number of eighth graders = 10

So, 10 eighth graders signed up for the programming club.

Therefore, based on the given information, 10 eighth graders signed up for the programming club.