Jose’s 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 collections? Use algebra to solve the equation.
Let x be the number of comic books on each shelf.
The bottom shelf has x + 20 comic books.
Each shelf has x comic books.
The total number of comic books on all shelves is 5x.
The equation is 5x = x + x + x + x + x + 20.
Combining x terms, we get 5x = 5x + 20.
Subtracting 5x from both sides gives 0 = 20.
Since this equation is not true for any value of x, there must be a mistake in the statement of the problem or in my reasoning.