Mar. 26 Ending 231 37 26 962 58 27 1,566 $ 5,954 199 $ 4,980 Requirement 2. Now assume Tuff Auto Supplies uses the periodic inventory s (Round interim calculations to two decimal places. Round your final answ $ (a) The cost of goods sold under the weighted-average-cost method is (b) The cost of goods sold under the FIFO method is $ 4,980 (c) Calculate gross margin for both methods. Which is higher? The gross margin under the weighted-average-cost method is