$(1)$

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 $300$ units from the January $30$ purchase, $5$ units from the January $20$ purchase, and $25$ units from beginning inventory.

$\backslash$table$[[$Date$,$Activities,Units A$,$cquired at $C,,$Units sold,at Retail$],[\backslash$table$[[$January $1],[$January $10]],\backslash$table$[[$Beginning inventory$],[$Sales$]],200$ units,$($c$)$ $$12\mathrm{.}50=,$$$2,500,,],[$January $20,$Purchase,$130$ units,c$)$ $$11\mathrm{.}50=,1,495,160$ units,$$21\mathrm{.}50$