Refer to Practice 9-6. Assume that the sales occurred as follows:

Units Sold

January 16 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100

July 15 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 600

November 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1,300

Total . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2,000

Compute (1) cost of goods sold and (2) ending inventory assuming

(a) FIFO inventory valuation,

(b) LIFO inventory valuation, and

(c) Average cost inventory valuation. The company uses a perpetual inventory system.