Answer:
FIFO stands for first in first out. This method of inventory management records cost of sales of oldest inventory first.
Jan. 4 dr Account receivable 696
cr sales(87×8) 696
Jan. 11 dr Inventory(141*6) 846
cr Account payable 846
Jan.13 dr Account receivable 742
cr Sales(106*7). 742
Jan. 20 dr Inventory(168*7) 1176
cr Account payable 1176
Jan. 27 dr Account receivable 1188
cr Sales(108*11) 1188
Jan. 31 dr cost of goods sold 1633
cr inventory 1633
87*4=348
24*4=96
82*6=492
59*6=354
49*7=343
COGS= 1633