Beginning inventory, purchases, and sales for WCS12 are as follows: Assuming a perpetual inventory system and using the weighted average method, determine (a) the weighted average unit cost after the...

Beginning inventory, purchases, and sales for WCS12 are as follows:

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.