Required information Use the following information for the Quick Study below. (Algo) (15-18) [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 30 units for $50 each. Purchases on December 7 Purchases on December 14 20 units @ $20.00 cost 34 units @ $30.00 cost Purchases on December 21 30 units @ $36.00 cost