The following information relates to the inventory of a bookseller in the records of Bayside Books Ltd, a company registered for GST. All unit prices below exclude GST. Using a periodic system and the FIFO method, determine the cost of the items in inventory on 30 June and the cost of sales for the year. Ending inventory: $ Cost of sales: $ Using a perpetual system and the FIFO method, determine the cost of the year-end inventory and the cost of sales. Using a periodic system and the weighted average method, calculate the cost of the items in inventory on 30 June and the cost of sales for the year. (Round answers to 2 decimal places, e.g. 52.75.) Ending inventory: $ Cost of sales: $ Using a perpetual system and the moving average method, calculate the cost of the year-end inventory and the cost of sales. (Round answers to 2 decimal places, e.g. 52.75.)