Date	Activities	Units acquired at cost	Units sold at retail
1-Jan	Beginning Inventory	160 units @ $7.20= $1,152
10-Jan	Sales		95 units @ 15.20
20-Jan	Purchase	230 Units @ 6.20 = 1,426
25-Jan	Sales		155 Units @ 15.20
30-Jan	Purchase	100 units at 5.20= 520
	Totals	490 units $3,098	250 Units

Laker company uses a perpetual inventory system. For specific identification, ending inventory cosists of 240 units, where 100 are from the january 30 purchase. 75 are from the january 20 purchase, and 65 are from the beginning inventory.