Periodic Inventory by Three Methods

The units of an item available for sale during the year were as follows:

Jan. $1$ Inventory

$4$ units @ $$43$

Feb. $17$ Purchase

$5$ units @ $$44$

July $21$ Purchase

$11$ units @ $$47$

Nov. $23$ Purchase

$20$ units @ $$47$

There are $4$ units of the item in the physical inventory at December $31.$ The periodic inventory system is used.

a$.$ Determine the inventory cost by the first$-$in$,$ first$-$out method.

b$.$ Determine the inventory cost by the last$-$in$,$ first$-$out method.

c$.$ Determine the inventory cost by the weighted average cost method. Round average unit cost to the nearest cent and final answers to the nearest whole dollar, if required