Ms. Spilker wrote a book on pickleball strategy. Each book weights 13/16 lb. If she pack 12 books in a box for shipping, what will be the shipping weight, excluding the box? Convert the answer to a mixed number.

To find the total weight of the books, we can multiply the weight of one book by the number of books: 12 books * (13/16 lb/book) = (12*13)/(16) = 156/16 lb.

To convert this fraction to a mixed number, we divide the numerator by the denominator and express the remainder as a fraction: 156 รท 16 = 9 remainder 12. So, the mixed number is 9 12/16 lb.
This can be simplified further by reducing the fraction: 12/16 = 3/4. So, the shipping weight, excluding the box, is 9 3/4 lb.