Gregs Bicycle Shop has the following transactions related to its top-selling Mongoose mountain bike for the month of March. Greg's Bicycle Shop uses a periodic inventory system. Date Transactions Units Cost per Unit Total Cost March 1 Beginning inventory 20 $185 $ 3,700 March 5 Sale ($270 each) 15 March 9 Purchase 10 205 2,050 March 17 Sale ($320 each) 8 March 22 Purchase 10 215 2,150 March 27 Sale ($345 each) 12 March 30 Purchase 9 235 2,115 $ 10,015.

1. Calculate ending inventory and cost of goods sold at March 31, using the specific identification method. The March 5 sale consists of bikes from beginning inventory, the March 17 sale consists of bikes from the March 9 purchase, and the March 27 sale consists of four bikes from beginning inventory and eight bikes from the March 22 purchase.

2. Using FIFO, calculate ending inventory and cost of goods sold at March 31.

3. Using LIFO, calculate ending inventory and cost of goods sold at March 31.

4. Using weighted-average cost, calculate ending inventory and cost of goods sold at March 31.

5. Calculate sales revenue and gross profit under each of the four methods