As both are adding same number of comic books each months, they will not have same number of books. Adrian will have 4 more comic books.
Step-by-step explanation:
Given,
Adrian starts with 12 comic books and add 4 each month.
Let,
m be the number of books.
A(m) = 4m+12
Rory starts with 8 comic books and add 4 comic books each month.
R(m) = 4m+8
As both are adding same number of comic books each months, they will not have same number of books. Adrian will have 4 more comic books.