Storage Plus Pty Ltd sells storage containers used for storing materials. The operating costs for the past year were as follows: Variable costs per unit: Direct Materials: $6.00 Direct Labour: $4.00 Variable Overhead: $3.00 Variable Selling: $1.00 Fixed costs: Fixed overhead for 400,000 units produced $200,000 Selling and administrative expenses $ 60,000 During the year, Storage Plus Pty Ltd produced 400,000 storage containers and sold 200,000 units at $30 each. Storage Plus Pty Ltd had 2,000 storage containers in beginning finished goods inventory. Required: 1. What is the per-unit inventory cost that is acceptable for reporting on Storage Plus Pty Ltd.'s balance sheet at the end of the year? 2. How many units are in ending inventory and what is the total cost of ending inventory under the absorption-costing method? 3. Calculate absorption-costing operating income. 4. What would the per-unit inventory cost be under variable costing? Does this differ from the unit cost calculated in Question 1? Explain why? 5. Calculate variable-costing operating income. (2.5+2+2.5+4.5+ 3.5-15 marks)