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Required information

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Laker Company reported the following January purchases and sales data for its only product. For specific identification, ending inventory consists of $180$ units from the January $30$ purchase, $5$ units from the January $20$ purchase, and $15$ units from beginning inventory.

$\backslash$table$[[$Date$,$Activities,Units,Acqu,re$,$d at$,$Cost,,Units sold at$,$Retail$],[$January $1,$Beginning inventory,$140$ units,@$,$$$,6\mathrm{.}00,=,$$$840,,],[$January $10,$Sales,,,,,,,$100$ units,@ $ $15],[$January $20,$Purchase,$60$ units,@$,$$$,5\mathrm{.}00,=,300,,],[$January $25,$Sales,,,,,,,$80$ units,a $$15$