Saved Required information (The following information applies to the questions displayed below) The Shirt Shop had the following transactions for T-shirts for 2018, its first year of operations: e Jan. 20 Purchased Apr. 21 Purchased July 25 Purchased Sept. 19 Parehased 400 units 200 units 280 units 90 units During the year, The Shirt Shop sold 810 T-shirts for $20 each. b. Compute the gross margin using the FIFO cost flow assumption. FIFO Gross margin