a$)$ Fill in the missing numbers in the inventory schedule using the weighted$-$average cost inventory valuation method. This company uses the perpetual inventory system.

Do not enter dollar signs or commas in the input boxes.

Round all answers to $2$ decimal places. All unit cost calculations should be rounded to $2$ decimal places as well.

$\backslash$table$[[$Inventory Schedule$],[,,$Purchases,Sales,Balance$],[$Transaction$,$Description,Quantity,Amount,Quantity,Amount,Quantity,Amount$],[,\backslash$table$[[$Opening$],[$Balance$]],$:$,,,,,$$$0$