Periodic inventory by three methodsi cost of goods sold The units of an item available for sale during the vear were as followsi There are Bo units of the item in the physical invertory at Decimber 31. The periodic inveotory syttem is used: Determine the ending inventory cost and the cost of goods sold by three methods, In your calculations round average unit cost to the nearest cent, and round all other calculations and your final answers to the nearest dollar. Perpetual Ifwentory using weighted average Beginning ifventory, purchases, and sales foc wCs12 are as followa: a. Assuming a perpetual ifventony system and using the weighted avenage method, isetermine the weighted average lnit cest after the October 22 purchase. Round you answer to two decimal places. per unit b. Assuming a perpetual inventery system and using the weighted averege mathod, determine the cost of goods sold on October za, Round your "average unit cost" to two decimal places. c. Assuming a perpetual inventory systern and.using the weighted avernge method, cetermine the imventory on Octeber 31 . Round your "average unit cost" to two decimal places