Perpetual Inventory Using Weighted Average Beginning inventory, purchases, and sales for WCS12 are as follows:

Oct. 1 Inventory 310 units at $8
13 Sale 180 units
22 Purchase 370 units at $9
29 Sale 200 units
a. Assuming a perpetual inventory system and using the weighted average method, determine the weighted average unit cost after the October 22 purchase. Round your answer to two decimal places.
$fill in the blank 1
per unit

b. Assuming a perpetual inventory system and using the weighted average method, determine the cost of goods sold on October 29. Round your "average unit cost" to two decimal places.
$fill in the blank 2
c. Assuming a perpetual inventory system and using the weighted average method, determine the inventory on October 31. Round your "average unit cost" to two decimal places.
$fill in the blank 3