Explain detailed please

Matlock Corporation sells item A as part of its product line. Information as to balances on hand, purchases, and sales of item A are given in the following table for the first six months of 2015 I. uantities Sold Date January 11 January 24 February 8 March 16 June 11 Balance 400 1,700 1,400 840 1,440 ase as $2.50 $2.60 1,300 300 560 600 $2.75 Instructions Compute the cost of goods sold for the first six months under the periodic FIFO inventory pricing method. 1. 2. Compute the ending inventory at June 30 under the perpetual LIFO inventory pricing method