Perpetual inventory using weighted average

Beginning inventory, purchases, and sales for WCS$12$ are as follows:

Date Line Item Description Value

Oct. $1$ Inventory $330$ units at $$15$

Oct. $13$ Sale $170$ units

Oct. $22$ Purchase $340$ units at $$16$

Oct. $29$ Sale $400$ 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 $1$ of $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 $1$ of $1$$

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 $1$ of $1$$

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When the average cost method is used in a perpetual inventory system, an average unit cost for each item is computed each time a purchase is made. This unit cost is used to determine the cost of each sale until another purchase is made and a new average is computed.