Assume a company had no jobs in progress at the beginning of July and no beginning inventories. It started and completed only two jobs during July-Job Y and Job Z. The company uses a plantwide predetermined overhead rate based on direct labor-hours. The following additional information from the month of July is available for the company as a whole and for Jobs Y and Z: Estimated total fixed manufacturing overhead $13,000 Estimated variable manufacturing overhead per direct labor-hour $ 1.00 Estimated total direct labor hours to be worked 2,000 Total actual manufacturing overhead costs incurred $ 12,800 Direct materials Job Y Job Z $13,000 $8,000 Direct labor cost $21,000 $7,500 Actual direct labor hours worked 1,400 ? Assuming Job Z's total job cost is $19,250, how many direct labor hours were actually worked on Job Z? O 525 O 500 575 600