Required information [The following information applies to the questions displayed below.] Darlington Company entered into the following business events during its first month of operations. The company uses the perpetual inventory system. 1) The company purchased $12,300 of merchandise on account under terms 4/10, n/30. 2) The company returned $1,800 of merchandise to the supplier before payment was made. 3) The liability was paid within the discount period. 4) All of the merchandise purchased was sold for $18,600 cash.