A store sells Q units of a product per year. It costs d dollars to store one unit for a year. To re-order, there is a fixed cost of b dollars, plus c dollars for each unit. How many times per year should the store re-order, and in what lot size, in order to minimize inventory costs? Use the general solution to find how many times per year is store should re-order, and then what lot size, when Q=105, d=$20, b=$42, and c=$18.

A store sells Q units of a prodoct per year it costs d dollars to store one unit for a year To reorder, there is a fixed cost of b dollars, plus c dollars for esch int. How many timas. per year should the store reorder, and in what lot size, in order to minimize inventory costs? Use the general solution to fild how many times per year a stere should reorder, and in what lat size, when Q=105,d=520,b=$42, and c=518 : ordersize=2bQdlotsize=d2bQ