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 Also, on December 15, Monson sells 15 units for $20 each Purchases on December 7 Purchases on 14 10 units @ $6.00 cost 20 units @ $12.00 cost 15 units $14.00 cost inventory purchases Also, on December 15, Monson sells 15 units for $20 eac