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Required information Trey Monson starts a merchandising business on December 1 and enters into the following three inventory purchases Also, on December 15, Monson sells 15 units for $20 each Purchases on December 7 Purchases on December 14 Purchases on December 21 1e units6.e0 cost 20 units $12.00 cost 15 units $14.00 cost Required Monson uses a perpetual inventory system. Determine the costs assigned to the December 31 ending inventory based on the FIFO metho Perpetual FIFO #of #of Units Cost Per Unit Goods Cost of Goods Sold Cost Per Inventory Balance # of Units Purchased Units Cost Per Unit Unit Sold December 7 10|@ $ 6.00| : | $ 60.00 December 14 20S 12.00S240.00 December 15 December 21 1514.00 210.00 Totals