The first 10 pages of a magazine include 4 pages of advertising. If the entire magazine has 30 pages of non-advertising content,
how many pages of advertisements will it most likely have?

To solve this problem you must apply the proccedure shown below:

You have  of a page of advertisements for every  pages in the magazine and the it has  pages. Therefore, you must multiply the total pages by  and divide the result by  pages.

Then:

number of pages of the magazine are advertisements

Therefore, the answer is:  pages.

Step-by-step explanation: