Please help FIFO/LIFO average cost if goods sold.

2) ABC Company began a new business on January 1, 2013 and made the following purchases and sales during the year. 1-1-13 800 paintings @$7 4-9-13 400 paintings @$8 6-14-13 500 paintings @$9 9-19-13 900 paintings @$10 10-25-13 600 paintings @$11 12-30-13 Sold 1200 paintings