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

Hemming Company reported the following current$-$year purchases and sales for its only product.

$\backslash$table$[[$Date$,$Activities,Units,Acquired at$,cost,,$Units sold at$,$Retail$],[$March $14,$Purchase,$460$ units,e $$17\mathrm{.}00,-,6,800,,],[$March $15,$Sales,,,,,$36e$ units,$$42\mathrm{.}80$