1/8 of Tony's are mystery books he had3 mystery books. How many books does he have in all?

(1/8) of what number is 3 ?

24

To find the total number of books Tony has, we need to find out how many times 1/8 is equal to 3.

Let's set up an equation:

1/8 * x = 3

To solve for x, we can multiply both sides of the equation by 8 to get rid of the fraction:

8 * (1/8 * x) = 8 * 3

This simplifies to:

x = 24

Therefore, Tony has a total of 24 books.