Aztec Corporation uses a periodic inventory system and the retail inventory method to estimate ending inventory and cost of goods sold. The following data are available for the month of September:

Cost Retail

Beginning inventory $ $29,000$ $ $46,000$

Net purchases $14,500?$question mark

Net markups $10,700$

Net markdowns $2,700$

Net sales $?$question mark

The company used the average cost flow method and estimated inventory at the end of September to be $$24,998\mathrm{.}00.$ If the company had used the LIFO cost flow method, the cost$-$to$-$retail percentage would have been $50\%.$

Required:

Compute net purchases at retail and net sales for the month of September using the information provided.