ES-3B On Scptember 1, Chen Business Supply had an inventory of 40 calculators at a cost of $18 cach. The company uses a perpctual inventory system. During September, the fol- lowing transactions occurred. Sept. 6 Purchascd 70 calculators at $20 cach from Markowitz Co. for cash. 9 Paid freight of $70 on calculators purchased from Markowitz Co. 10 Retumed 2 calculators to Markowitz Co. for $42 credit (including freight) because they did not meet specifications. 12 Sold 40 calculators costing $21 (including freight) for $34 cach to Karl Book Store, terms n/30. 14 Granted credit of $34 to Karl Book Store for the return of one calculator that was not ordered. 20 Sold 20 calculators costing $21 (including freight) for $35 cach to Sayed's Card Shop, terms n/30. Instructions Journalize the September transactions.