Question

В книжном шкафу число учебников относиться к числу художесвенных кник как 2:5 сколько в этом шкафу учебников если в нем всего 35 книг?

Answer 1

2 + 5 = 7 ( частей ) 
35 : 7 = 5 ( книг ) в одной части 
5 х 2 = 10 ( книг ) учебников
5 х 5 = 25 ( книг ) художественных 

Answer 2

Calculating the Number of Textbooks in the Bookshelf

To calculate the number of textbooks in the bookshelf, we can use the given ratio of textbooks to fiction books, which is 2:5. We are also given that there are a total of 35 books in the bookshelf.

Calculation

Let's denote the number of textbooks as 2x and the number of fiction books as 5x. According to the given ratio, the total number of books can be represented as:

2x + 5x = 35

Solving for x:

7x = 35

x = 5

Now, we can find the number of textbooks by substituting the value of x back into the equation:

2 * 5 = 10

So, there are 10 textbooks in the bookshelf.

Conclusion

Therefore, if there are a total of 35 books in the bookshelf and the ratio of textbooks to fiction books is 2:5, then there are 10 textbooks in the bookshelf.