A review of the Double Rainbow Corporation shows the following purchases and sales: Jan 1 Beginning inventory 50 units at $16.00 March 3 April 7 Purchases 100 units at $19.00 Sales 110 units at $38.00 Aug. 21 Purchases 60 units at $22.00 30 units at $20.00 64 units at $36.00 Oct. 3 Dec 15 Purchases Sales $ 800 $1.900 $1,320 $ 600 REQUIRED: Calculate the following. Show all calculations to receive full marks. 1. Calculate the number of units in ending inventory. Answer: ii. Calculate FIFO total $ in ending inventory based on the perpetual method Answer: $ iii. Weighted average total ending inventory based on the periodic metho (round weighted average cost to 2 decimal places. Round final answer to nearest dollar) Answer: $ iv. Using FIFO based on the perpetual method, calculate the total gross profit. Answer:$ Focus