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

Answer 1

If the bottom shelf has 125 books after Jose’s father adds 20, it had 125-20=<<125-20=105>>105 books before.
Since there is an equal number on each shelf, Jose has 105/5=<<105/5=21>>21 books on each shelf.
Since there are 5 shelves in total, Jose's comic collection has 5*21=<<5*21=105>>105 books. Answer: \boxed{105}.