Jose has a comic book collection that he keeps among 5 shelves with an equal number on each shelf. His father adds 20 comic books to the bottom shelf, so the shelf now has 125 books. How many total books are in his collection? Use algebra to solve the equation....

Answer 1

Let "x" represent the number of comic books on each shelf.
After his father adds 20 books, the total number of comic books on the bottom shelf becomes x + 20 = 125
Subtracting 20 from each side of the equation, we get x = 105
Since there are 5 shelves, and each shelf has x comic books, the total number of comic books in the collection is 5 * 105 = <<5*105=525>>525 comic books. Answer: \boxed{525}.