Required information. Use the following information for the Quick Study below. (Algo) (11-14) [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 $28 each. Purchases on December 7 Purchases on December 14 Purchases on December 21 10 units @ $14.00 cost 20 units @ $20.00 cost 15 units @ $22.00 cost