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

Date Activities Units Acquired at Cost Units Sold at Retail

March $1$ Beginning inventory $250$ units @ $$54\mathrm{.}00$ per unit

March $5$ Purchase $300$ units @ $$59\mathrm{.}00$ per unit

March $9$ Sales $410$ units @ $$89\mathrm{.}00$ per unit

March $18$ Purchase $160$ units @ $$64\mathrm{.}00$ per unit

March $25$ Purchase $300$ units @ $$66\mathrm{.}00$ per unit

March $29$ Sales $280$ units @ $$99\mathrm{.}00$ per unit

Totals $1,010$ units $690$ units

$4.$ Compute gross profit earned by the company for each of the four costing methods. For specific identification, units sold include $140$ units from beginning inventory, $270$ units from the March $5$ purchase, $120$ units from the March $18$ purchase, and $160$ units from the March $25$ purchase.