Perpetual inventory using weighted average

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

$\backslash$table$[[$Oct$.1$ Inventory,$340$ units at $$14,],[$Oct$.13,$Sale,$190$ units$],[$Oct$.22,$Purchase,$350$ units at $$15],[$Oct$.29,$Sale,$300$ 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.

$ per unit

b$.$ Assuming a perpetual inventory system and using the weighted average method, determine the cost of goods sold on Octol

$29.$ 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.

$