1) Oct1 Business purchased $5350 of inventory from GSC's Inc.. Terms 2/10, n/20 FOB

2) Oct1 Business sold $7830 inventory to NCE's Inc., the cost is $1130. Terms 2/15, n/30 FOB

3) Oct4, Business returned defective $275 inventory back to GSC's Inc.

4) Oct7 Business paid delviery $235 for the inventory sales to NCE's Inc.

5) Oct8 Business issued a credit memo $215 to NCE's Inc., regarding the sales discount on Oct1

6) Oct9 business purchased inventory $4230 from Bob's Ltd, Terms: 1/5, n/10, FOB

7) Oct11 Business paid the GSC's Inc. in full.

8) Oct16 Business Received NCE's Inc's money.

9) Oct30 paid Bob's Ltd for the Oct9 purchase.

Please use the lecture notes as a reference to complete all the entries under the perpetual inventory system( if any entry is calculation related, please also indicate the calculation details).