The following represents the inventory of Rajan Company for the month of April:

a. Assuming a periodic inventory system is used by Rajan Company, what is ending inventory under LIFO? b. Assuming a periodic inventory system is used by Rajan Company, what is the cost of goods sold under FIFO? c. Assuming a periodic inventory system is used by Rajan Company, what is ending inventory under the Weighted-Average Cost method? d. What are the gross margin for a and b and c above?

100 units @ $8 April 1 Beginning Inventory April 2 Sales April 3 Purchases April 10 Sales April 21 Purchases Apri 28 Sales 50 units 300 units @ $12 250 units 400 units $16 200 units