Solution: Because 14÷7=2 packs, 35÷7=5 copies,
So112 of this batch of books is: 2 packs +5 copies.
Then 5/ 12 is: 5×2= 10 package, 5×5=25 copies, that is, 10 package +25 copies.
In addition, 10 package +25 books +35 books = 1 1 package,
Then 1 package =25+35=60 copies.
So these books are:
( 14+ 1 1)×60
=25×60,
= 1500 (Ben).
A: There are 1500 books in this batch.