attatched, this only answered b what about a$?$

4 Not changed since last attempt Marked out of 8.00 Question Calculating Weighted-Average Cost Inventory Values. Flag question The Mann Corporation began operations in Year 1. Information relating to the company's purchases of inventory and sales of products for Year 1 and Year 2 is pre March 1 June 1 Year 1 Purchase 200 units Sold 120 units September 1 1 Purchase 100 units November 1 Sold 130 units Year 2 Purchase 100 units March 1 June 1 Sold 80 units September 1 Purchase 100 units November 1 Sold 100 units $160 $400 $224 $400 $256 $480 $288 $560 per unit per unit per unit per unit per unit per unit per unit per unit Calculate the weighted-average cost of goods sold and ending inventory for Year 1 and Year 2 assuming use of (a) the periodic method and (b) the perpetual meth( a. Weighted-Average Periodic. Do not round your cost per unit. Do not round until your final answer. Round your answers to the nearest whole number. Year 1 Cost of goods sold Ending inventory Year 2 Cost of goods sold Ending inventory 2,700 700 3,080 1 ,020 b. Weighted-Average Perpetual. Do not round your cost per unit. Do not round until your final answer. Round your answers to the nearest whole number. Year 1 Cost of goods sold Ending inventory Year 2 Cost of goods sold Ending inventory 2,700 900 2,840 1 ,260