Net sales ………………………………………….. $300,000
Cost of goods sold
Beginning inventory ………………….. $ 4,500
Net purchases …………………………... $176,800
Add: Freight-in …………………………. 3,900
(b) Net sales …………………………………………………….. $250,000
Less: Estimated gross profit
(45% X $250,000) ………………………………. 112,500
Estimated cost of goods sold ………………………. $137,500
Beginning inventory ……………………………………. $ 20,200
Net purchases …………………………………………….. $139,000