I want solution of this problem

Presented here are selected transactions for Alpine Tours Inc. during September of the current year. Alpine Tours uses a perpetual inventory system. Alpine Tours estimates a return rate of 5% based on past experience. Sept. 2 Purchased equipment on account for $64,200, terms n/30, FOB destination. 3 Freight charges of $1,000 were paid by the appropriate party on the September 2 purchase of equipment. 4 Purchased supplies for $4,000 cash. 6 Purchased inventory on account from Winterholt Company at a cost of $66,100, terms 1/15,n/30,FOB shipping point. 7 Freight charges of $1,400 were paid by the appropriate party on the September 6 inventory purchase. 8 Returned damaged goods costing $5,400 that were originally purchased from Winterholt Company on September 6. Received a credit on account. 9 Sold goods costing $15,900 to Fischer Limited for $20,800 on account, terms n/30, FOB destination. 10 Freight charges of $340 were paid by the appropriate party on the September 9 sale of inventory. 10 Freight charges of $340 were paid by the appropriate party on the September 9 sale of inventory. 17 Received the balance due from Fischer. 20 Paid Winterholt Company the balance due. 21 Purchased inventory for $6,600 cash. 22 Sold irventory costing $19,700 to Kun-Tai Inc. for $28,900 on account, terms N30.,FOB shipping point. 23 Freight charges of $400 were paid by the appropriate party on the September 22 sale of inventory 28 Kun-Tai returned goods sold for $980 that cost $730. The merchandise was restored to inventory