Perpetual inventory using weighted average OBJ. 3 Beginning inventory, purchases, and sales for WCS12 are as follows:

Oct. 1 Inventory 300 units at $8 13 Sale 175 units 22 Purchase 375 units at $10 29 Sale 280 units Assuming a perpetual inventory system and using the weighted average method, determine

(a) the weighted average unit cost after the October 22 purchase,

(b) the cost of the merchandise sold on October 29, and

(c) the inventory on October 31.