Help with the following information for the creditors payment schedule. Projected sales - July:R75000,August:R69000,September:R84000. The mark-up is used 33¹/3 and stock is maintained at a consistent level. All goods are bought on credit. The owner is expected to take gods costing R750 for own use each month. Creditors will be paid as follows: 10% in the month of the purchase, the balance equally over 60 days . Calculate the cost of sales for September