Required information [The following information applies to the questions displayed below] Trey Monson starts a merchandising business on December 1 and enters into the following three inventory purchases. Monson uses a periodic inventory system. Also, on December 15 , Monson sells 15 units for $20 each. Determine the costs assigned to ending inventory when coits are assigned based on the fifo iwethod requirea informanion [The following information applies to the questions displayed below.] Trey Monson starts a merchandising business on December 1 and enters into the following three inventory purchases. Monson uses a periodic inventory system. Also, on December 15 , Monson sells 15 units for $20 each. Determine the costs assigned to ending inventory when costs are assigned based on the LIFO method. Trey Monson starts a merchandising business on December 1 and enters into the following three inventory purchases. Monson uses a periodic inventory system. Also, on December 15 , Monson sells 15 units for $20 each. Determine the costs assigned to ending inventory when costs are assigned based on the weighted average method. (Round cost per units to 2 decimal places.) Irey Monson starts a merchandising business on December 1 and enters into the following three inventory purchases. Monson uses a periodic inventory system. Also, on December 15, Monson sells 15 units for $20 each. Of the units soid, eight are from the December 7 purchase and seven are from the December 14 purchase. Determine the costs assigned to ending inventory when costs are assigned based on specific identification