The hardcover version of a book weighs 7 ounces while its paperback version weighs 5 ounces. forty-five copies of the book weigh a total of 249 ounces. which value could replace x in the table? 40 – h 50 – h 5(45) – h 5(45 – h)the hardcover version of a book weighs 7 ounces while its paperback version weighs 5 ounces. forty-five copies of the book weigh a total of 249 ounces. which value could replace x in the table? 40 – h 50 – h 5(45) – h 5(45 – h)