Memofax,inc,produces memory enhancement kits for fax machines. Sales have been very errati,with some

Memofax,inc,produces memory enhancement kits for fax machines. Sales have been very errati,with some months showing a profit and some months showing a lose. The companys contribution format income statement for the most recent month is given belowSales13,500 units at 20 pe unit……..270000variabl expenses……….189000