i need help figuring out the incorrect ones

Montoure Company uses a perpetual inventory system. It entered into the following calendar-year purchases and sales transactions. Required: 1. Compute cost of goods available for sale and the number of units available for sale. Answer is complete and correct. 2. Compute the number of units in ending inventory. 2. Compute the number of units in ending inventory. 8) Answer is not complete. 3. Compute the cost assigned to ending inventory using (d) FIFO, ( LIFO, (d) weighted averege, and ( specilicidentification. (For specific identification, units sold consist of 540 units from beginning inventory, 360 from the February 10 purchase, 100 from the March. 13 purchase, 120 from the August 21 purchase, and 225 trom the September 5 purchise) Answer is not complete. Complete this question by entering your answers in the tabs below. Compute the cost awigned to enong inventory using firo. (hound your averoge cost per unit to 2 ctcimal placet.) 3. Compute the cost assigned to ending inventory using (d) FiFO, (b) LIFO, (c) weighted average, and (d) specific identification. (For specific identification, units sold consist of 540 units from beginning inventory, 360 from the February 10 purchase, 100 from the March 13 purchase, 120 from the August 21 purchase, and 225 from the September 5 purchase.)