The units of Manganese Plus available for sale during the year were as follows:

There are $18$ units of the product in the physical inventory at November $30.$ The periodic

inventory system is used.

a$.$ Determine the inventory cost using the FIFO method.

$

b$.$ Determine the inventory cost using the LIFO method.

$

c$.$ Determine the inventory cost using the weighted average cost methods. Round

interim calculations and final answer to two decimal places.