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)
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Let's call the number of books on each shelf x.
The number of books on the bottom shelf after his father added 20 is x + 20.
Since there are 5 shelves, the total number of books on all the shelves is 5x.
And since the number of books on the bottom shelf is 125, we can write the equation:
x + 20 = 125
Subtracting 20 from both sides of the equation, we get:
x = 105
So there are 105 books on each shelf.
The total number of books in the collection is 5x = 5 * 105 = 525. Answer: \boxed{525}.