MC Qu. 28 Buker Corporation bases its predetermined... Buker Corporation bases its predetermined overhead rate on the estimated machine-hours for the upcoming year. Data for the upcoming year appear below. Estimated machine hours Estimated variable manufacturing overhead Estimated total fored manufacturing overead 72,200 $330 per machine-hour $838.740 The predetermined overhead rate for the recently completed year was closest to OOO $9.90 $14.92 $6.70 $8.61