Pls answer the questions with your detailed explanations, it's much appreciated!

18 The information below relates to inventory item Z. Under AVCO, what is the value of inventory held for item Z at the end of March 31 ? $4,000$1,800$2,000$2,500 (2 mark A firm has the following transactions with its product R. The firm uses continuous weighted average cost (AVCO) to value its inventory. What is the inventory value at the end of the year? (Give your answer to 2 decimal places) $ (2 marks) A firm has the following transactions with its product Q. The firm uses periodic weighted average cost (AVCO) to value its inventory. What is the inventory value at the end of the year? (Give your answer to 2 decimal places) (2 marks)