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Warnerwoods Company uses a perpetual inventory system. It entered into the following purchases and sales transactions for March.

$4.$ Compute gross profit earned by the company for each of the four costing methods. 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.

Note: Round weighted average cost per unit to $2$ decimal places.

$\backslash$table$[[$Gross Margin,FIFO,LIFO,Weighted Average,Specific ID$],[$Sales$,,,,],[$Less: Cost of goods sold,,,,$],[$Gross profit,,,,$]]$