Ype the correct answer in the box. use numerals instead of words. if necessary, use / for the fraction bar. wendy is arranging books on the bookshelves in the school library. the total number of books she arranges is given by the equation b = 12r, where b is the total number of books and r is the number of rows. each row contains the same number of books. if wendy arranged 16 rows, she arranged a total of books.