A deli sells 960 sandwiches per day at a price of eight dollars each. Market survey shows that for every $.10 reduction in the price, 20 more sandwiches will be sold. How much does a deli charge in order to maximize revenue? A different market survey shows that for every $.20 reduction in the original eight dollar price, five more sandwiches will be sold. No how much does a deli charge in order to maximize revenue?