a neswpaper seller, sam $,$ ?is fine with the fact that he may not have enough newspaper to sell $20\%$ ?of each day. the newspaper demand follows a normal didstrution with $110$ ?and std $10.$ sells the newspapers to a selling price of $18$ ?and can salvage and additional units for $5$ ?at the end of each day. the newspaper seller incurs a fixed setup cost every day due to reansportation when he places and order. his vendor kara decided to crease her selling price to sam.and the same time transportation cost increased more than the increase in the karas selling price. how should same change his stockin quantity?