Exercise 9.18 (Algo) Retoil inventory method; solving for unknowns [LO9-3] Aztec Corporation uses a penodic irventory system and the retail inventory method to estimate ending inventory and cost of goods ' sold. The following dota are avallable for the month of September The company used the averoge cost now method and estmated imventory at the end of September to be $17,494,50. If the cocnpany had used the UFO cost how method, the cast to-cetsil percentage would have been 505 Required: Compute net purchases atretail and net sales for the month of September vsing the information provided. Note: D0 not round your intermediate colculations