Wong's Trading Cards, Inc, had the following purchases in the month of April. On April 15, Wong sells 4,000 units for $20 unit. What are Wong's Total Sales? [80,000] What is Wong's Gross Profit using the FIFO method of Inventory Valuation? What is Wong's Gross Margin Ratio using the FIFO method of Inventory Valuation? (round to two decimal places and include the % sign) What is Wong's Gross Profit using the LIFO method of Inventory Valuation? What is Wong's Gross Margin Ratio using the LIFO method of Inventory Valuation? What is Wong's Gross Profit using the Weighted Average method of Inventory Valuation? What is Wong's Gross Margin Ratio using the Weighted Average method of inventory valuation