Activity: Inventory Cost Flow Methods Assume that Crystal Pleak Ski Gear $($CPSG$)$ uses a periodic inventory system and calculates cost of goods sold and ending inventory once a month at the end of the month. The accounting records show the following inventory data for July $2017$ for their most popular item, the "GlidePro $2"$ skis:

Inventory and Sales Activity for July $2017$: Inventory and Sales Activity for July $2017$:

Beginning inventory: $50$ skis purchased for $$150$ each

Purchase on $7/5$: $10$ skis purchased for $$155$ each

Sales $7/1-7/14$: $20$ skis sold for $$350$ each

Purchase on $7/18$: $30$ skis purchased for $$160$ each

Sales $7/15-7/31$: $15$ skis sold for $$360$ each

Part A: Calculate the following totals as of July $31,2017$:

Total number of skis available for sale

Total cost of goods available for sale

Total number of skis sold

Part B: Calculate the Cost of Goods Sold and Ending Inventory using the FIFO method.

Part Ci Calculate the Cost of Goods Sold and Ending Inventory wing the LIFO method.

Part D: Calculate the Cost of Goods Sold and Ending Inventory using the Average Cost method.