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[Extra Credits] Madison Company sells mary products. Lucky is one of its popular items. Below is an analysis of the inventory purchases and sale3 of Lucky for the month of March. Madison Company uses the periodic inventory system. Sales Purchases Units 100$40 60 Unit Cost Units Selling Price/Unit 3/1 Beginining inventory 3/3 Putchase 3/4 Seles 30 Purchase 316 Sales $50 60 $80 $55 200 70 $90 $90 $90 3/19 Sales 3/25 Sales 90 60 $60 3/30 Purchase 40 (b) Using the weighted-average method, calculate the amount assigned to the inventory on hand on March 31. (Show computations)