help with the 4 questions

Trey Monson starts a merchandising business on December 1 and enters into the following three inventory purchases Monson uses a perpetual inventory system. Also, on December 15 , Monson sells 15 units for $39 each. Required: Determine the costs assigned to the December 31 ending inventory based on the FIFO method. Trey Monson starts a merchandising business on December 1 and enters into the following three inventory purchases. Monson uses a perpetual inventory system. Also, on December 15, Monson sells 15 units for $39 each. etermine 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 perpetual inventory system. Also, on December 15 , Monson sells 15 units for $39 each Determine the costs assigned to ending inventory when costs are assigned based on the weighted average method. (Round your per init costs to 2 decimal places.) Trey Monson starts a merchandising business on December 1 and enters into the following three inventory purchases. Monson uses a perpetual inventory system. Also, on December 15 . Monson sells 15 units for $39 each. Of the units sold, 8 are from the December 7 purchase and 7 are from the December 14 purchase. Determine the costs assigned to ending inventory when costs are assigned based on specific identification