Show me the steps to solve MNO Pty Ltd analyses its inventory turnover every $28$ days. The company has the following information for the period of $1$ February to $28$ February $2022($all figures GST exclusive$)$

Table $47$ MNO Pty Ltd inventory information

Inventory$/$ sale Amount $($$$)$

Inventory on $1$st February $14,000$

Purchase of inventory on $14$ February $12,000$

Cost of Sales on $16$ February$18,000$

Cost of Sale on $17$ February$15,000$

Cost of Sales on $19$ February$8,000$

Purchase of inventory on $22$ February$22,000$

Purchase of inventory on $25$ February$10,000$ Using the information provided in the table, calculate the following:

$$ the total purchases and total cost of goods sold for the period

$$ the ending inventory balance and the average inventory

$$ the inventory turnover rate and inventory holding time