Perpetual inventory using weighted average

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

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.

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.

$

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.

$