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.(1 point) it isn't 25

Answer 1

Let x be the number of comic books on each shelf before his father added 20 books.
Since the number of books on each of the 5 shelves is the same, then there are a total of 5x books in the collection.
After his father added 20 books, the number of books on the bottom shelf is x + 20.
Given that the bottom shelf now has 125 books:
x + 20 = 125
By subtracting 20 from both sides of the equation, you get:
x = 125 - 20
Simplifying the right side, you get:
x = 105
Therefore, there are 5 x 105 = <<5*105=525>>525 total comic books in his collection. Answer: \boxed{525}.