On December 31,2020 , the store management considers adopting the LIFO retail system and desires to know how the December 31 , 2020 , inventory would appear under both systems. All pertinent data regarding purchases, sales, markups, and markdowns are shown below. There has been no change in the price level. Determine the cost of the 2020 ending inventory under both (a) the conventional retail method and (b) the LIFO retail method. (Round ratios for computational purposes to 2 decimal place, es. 78.72\% and final answers to 0 decimal places, es. 28.987.) (a) Ending inventory using conventional retail method $ (b) Ending inventory LIFO retail method