Help with the 4 inventory methods. If you would include how you did it, that would be really useful!

The first one:

The second one:

IThe following Information applies to the questions displayed below.j Laker Company reported the following January purchases and sales data for its only product. Date Jan. 1 Beginning inventory Jan. 10 Sales Jan. 20 Purchase Jan. 25 Sales Jan. 30 Purchase Units sold at Retail 130 units $18.50 130 units $18.50 Activities Units Acquired at Cost 170 units @ $9.50= $1.615 120 units @ $8.50= 1.020 260 units @ $8.00= 2.080 Totals 550 units 4,715 260 units The company uses a perlodic Inventory system. For specific Identification, ending Inventory consists of 290 units, where 260 are from the January 30 purchase, 5 are from the January 20 purchase, and 25 are from beginning Inventory