In addition, make some explanation of how you figured out the numbers, please.

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 perpetual inventory system. Also, on December 15 , Monson sells 15 units for $32 each. etermine the costs assigned to ending inventory when costs are assigned based on the LIFO method