plz help! i keep getting this wrong for some reason. (will rate after anwsered)

Required information [The following information applies to the questions displayed below.) Greg's Bicycle Shop has the following transactions related to its top-selling Mongoose mountain bike for the month of March. Greg's Bicycle Shop uses a periodic inventory system. Unit Cost $ 205 Total Cost $ 4,100 Date March 1 March 5 March 9 March 17 March 22 March 27 March 30 Transactions Beginning inventory Sale ($310 each) Purchase Sale ($360 each) Purchase Sale ($385 each) Purchase 225 Units 20 15 10 8 10 12 9 2,250 235 2,350 255 2,295 $10,995 For the specific identification method, the March 5 sale consists of bikes from beginning inventory, the March 17 sale consists of bikes from the March 9 purchase, and the March 27 sale consists of four bikes from beginning inventory and eight bikes from the March 22 purchase. 2. Using FIFO, calculate ending inventory and cost of goods sold at March 31. Ending inventory Cost of goods sold $ $ 2,870 8,125