Q$1.$

Willets Coffee Equipment sells European style coffee makers and uses a perpetual inventory system. Its inventory records show that on June $1,$ Joe Coffee had $12$ units on hand at a cost of $$220$ each. Transactions related to the purchase and sale of coffee makers in June were as follows:

$\backslash$table$[[,,,$Per unit$],[$Date$,$Transaction,Units,Cost,Sales price$],[$June $10,$Sale,$3,,$$$510$