Please show work and explain

1) The following information is provided for PO Company: Purchased 100 units of merchandise for $20 each Paid $50 of freight costs for the merchandise received Paid $1,200 for an advertising campaign related to the merchandise Returned 10 of the units purchased because they were broken Paid the purchasing manager's monthly salary of $3,000 Determine the cost of PO's inventory at the end of the period B) $4,800 C) $1,850 A) $1,800 D) $3,050 2) Which of the following DECREA SES the cost of inventory purchased? A) purchasing merchandise FOB shipping point B) payment of accounts payable C) purchase allow ances D) sal es tax 3) On May 27, Ace Electronics ordered merchandise from Elmo Company. Elmo shipped the merchandise to A ce on May 31, FOB destination. The merchandise arrived at Ace's warehouse on June 2. A ce paid for the merchandise on July 1. When should Ace record the purchase? A) May 27 C) June 2 B) July 1 D) May 31 4) Sailors, Inc. sold $100,000 of merchandise to Breyer, Inc. with terms of 1/10, n/30. Five days later, Breyer returned $10,000 of the merchandise. If Breyer pays within the discount period, how much cash will Sailors receive? A) $89,100 C) $90,000 B) $99,000 D) $100,000 5) On February 12, Horseshoe Bend Company purchases $25,000 of merchandise from avendor with credit terms of 2/10, n/30. On February 15, Horseshoe Bend Company returns $5,000 of the goods because they are defective. If Horseshoe Bend pays the vend or the full amount due on February 20, the amount of the payment is A) $18,000 C) $19,600 D) $20,000 B) $25,000