All the printing presses at a print shop were scheduled to make copies of a novel and a cookbook. they were to print the same number of copies of each book, but the novel had twice as many pages as the cookbook. all of the printing presses worked for the first day on the larger book, turning out novels. then, on day two, the presses were split into two equally sized groups. the first group continued printing copies of the novel and finished printing all the copies by the evening of the second day. the second group worked on the cookbook but did not finish by evening. one printing press, working for two additional full days, finished printing the remaining copies of the cookbooks. if all printing presses printed pages (for both the novel and cookbook) at the same constant rate, how many printing presses are there at the print shop?
a. solve the problem working with rates to setup a tape diagram or an area model.
b. solve the problem by setting up an equation.