A deli sells 480 sandwiches per day at a price of $4 each {NA market surveyI shows that for every $0.10 reduction in the price. 40 more sandwiches will be sold. How much should the deli charge in order to maximize revenue? The deli should charge $ for a sandwich to maximize revenue. (Round to the nearest cent as needed.) {Em different market sunle',r shows that for etrerl,r $0 20 reduction in the orlginal $4 price. 10 more sandwiches will he sold. Now how much should the deli charge in order to maximize revenue? Now the dell should charge 35 for a sandvncn to maximize revenue. {Round to the nearest cent as needed.)