hi , would u like to tell me how to do this one?thank u very much

Captain's Cereal is considering introducing a variation of its current breakfast cereal, Crunch Stuff. This new cereal will be similar to the old, with the exception that it will contain sugarcoated marshmallows shaped in the form of stars. The new cereal will be called Crunch Stuff n' Stars. It is estimated that the sales for the new cereal will be $25 million; however, 20% of those sales will draw from former Crunch Stuff customers who have switched to Cruch Stuff n' Stars and who would not have switched if the new product had not been introduced. What is the relevant sales level to consider when deciding whether or not to introduce Crunch Stuff n' stars