Cast Iron Grills, Inc., manufactures premium gas barbecue grills. The company reports inventory and cost of goods sold based on calculations from a LIFO periodic inventory system. Cast Irons December 31, 2021, fiscal year-end inventory consisted of the following (listed in chronological order of acquisition):

Units	Unit Cost
5,600	$	400
4,300		500
6,600		600

The replacement cost of the grills throughout 2022 was $700. Cast Iron sold 30,000 grills during 2022. The company's selling price is set at 200% of the current replacement cost. Required: 1. & 2. Compute the gross profit (sales minus cost of goods sold) and the gross profit ratio for 2022 under two different assumptions. First, that Cast Iron purchased 31,000 units and, second, that Cast Iron purchased 16,500 units during the year. 4. Compute the gross profit (sales minus cost of goods sold) and the gross profit ratio for 2022 assuming that Cast Iron purchased 31,000 units (as per the first assumption) and 16,500 units (as per the second assumption) during the year and uses the FIFO inventory cost method rather than the LIFO method.