Mojo Industries tracks the number of units purchased and sold throughout each accounting period but applies its inventory costing method at the end of each period, as if it uses a periodic inventory system. Assume its accounting records provided the following information at the.end of the accounting period, January $31.$ The inventory's selling price is $$9$ per unit.

$\backslash$table$[[$Transactions$,$Unit Cost,Units,$\backslash$table$[[$Total$],[$Cost$]]],[\backslash$table$[[$Inventory$,$ January $1],[$Sale$,$ January $10]],$$$2\mathrm{.}50,\backslash$table$[[250],[(200)$