Ted has a shelf that is 75 over 4 inches wide. How many books can Ted arrange on the shelf if each book is 5 over 4 inches thick? 23, because the number of books is 75 over 4 ⋅ 5 over 4 15, because the number of books is 75 over 4 ÷ 5 over 4 9, because the number of books is 75 over 4 ÷ 4 over 5 33, because the number of books is 75 over 4 ⋅ 5 over 4