and $30$ units from beginning inventory.

$\backslash$table$[[\backslash$table$[[$Date$],[$January $1],[$January $10],[$January $20],[$January $25],[$January $30]],\backslash$table$[[$Activities$],[$Beginning inventory$],[$Sales$]],$Units Acquired at Cost,Units sold at Retail$],[155,$units,@ $$8\mathrm{.}00,=,$$$1,240,,,],[,,,,,115,$units,@ $$17\mathrm{.}00$