TB MC Qu. 2-37 Longobardi Corporation bases its predetermined overhead ... Longobardi Corporation bases its predetermined overhead rate on the estimated labor-hours for the upcoming year. At the beginning of the most recently completed year, the Corporation estimated the labor-hours for the upcoming year at 45,800 labor-hours. The estimated variable manufacturing overhead was $6.19 per labor-hour and the estimated total fixed manufacturing overhead was $1,335,528. The actual labor-hours for the year turned out to be 43,800 labor-hours. The predetermined overhead rate for the recently completed year was closest to: