Urgent request. Please answer this carefully. Within 2 hours. Will give up vote. thx so much

(The following information applies to the questions displayed below.) Viper Company began year 2011 with 22,000 units of product in its January 1 inventory costing $15.40 each. It made successive purchases of its product in year 2011 as follows. The company uses a periodic inventory system. On December 31, 2011, a physical count reveals that 39,000 units of its product remain in inventory. Mar. 7 May, 25 Aug. 1 Nov. 10 32,000 units @ $18.40 each 34,000 units @ $22.40 each 24,000 units @ $24.40 each 35,000 units @ $27.40 each 3. value: 4.00 points Required: 1. Compute the number and total cost of the units available for sale in year 2011. (Omit the "$" sign in your response.) units Number of units available for sale Cost of the units available for sale 4. value: 16.00 points 2. Compute the amounts assigned to the 2011 ending inventory and the cost of goods sold. (Input all amounts as positive values. Round per unit costs to 3 decimal places. Round your final answers to the nearest dollar amount. Omit the "$" sign in your response.) (a) FIFO periodic Total cost of units available for sale Less ending inventory on a FIFO basis Cost of units sold (b) Weighted average cost periodic Total cost of units available for sale Less ending inventory on a weighted average cost Cost of units sold