Warnerwoods Company uses a perlodic Inventory system. It entered Into the following purchases and sales transactions

for March.

For specific identification, units sold Include $80$ units from beginning Inventory, $340$ units from the March $5$ purchase, $40$

units from the March $18$ purchase, and $120$ units from the March $25$ purchase.

Compute gross profit earned by the company for each of the four costing methods.

Note: Round your average cost per unit to $2$ decimal places and final answers to nearest whole dollar.