$[$The following information applies to the questions displayed below.$]$

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 $230$ units @ $$53\mathrm{.}60$ per unit

March $5$ Purchase $290$ units @ $$58\mathrm{.}60$ per unit

March $9$ Sales $390$ units @ $$88\mathrm{.}60$ per unit

March $18$ Purchase $150$ units @ $$63\mathrm{.}60$ per unit

March $25$ Purchase $280$ units @ $$65\mathrm{.}60$ per unit

March $29$ Sales $260$ units @ $$98\mathrm{.}60$ per unit

Totals $950$ units $650$ units

$4.$ Compute gross profit earned by the company for each of the four costing methods. For specific identification, units sold include $130$ units from beginning inventory, $260$ units from the March $5$ purchase, $110$ units from the March $18$ purchase, and $150$ units from the March $25$ purchase.

Note: Round weighted average cost