BE6-3 In its first month of operations. Quirk Company made three purchases of merchandise in the following sequence: (1) 300 units at $6, (2) 400 units at $7, and (3) 200 units at $8. Assuming there are 360 units on hand, compute the cost of the ending inventory under the

(a) FIFO method and

(b) LIFO method. Quirk uses a periodic inventory system.