Answer:
45/p where p is the number of pages of the book.
Step-by-step explanation:
To know the price per page of printing, we need to know the total number of pages of the book.
Let's call p the number of pages of the book and x the cost per page. Now we are going to do a proportion and will solve for x
[tex]\frac{45}{p} =\frac{x}{1} \\x= \frac{45}{p}[/tex]
Therefore, the price per page will be 45 divided by the number of pages of the book.