problem: Mason Company uses a job order cost accounting system. At year-end the Work in Process Inventory controlling account showed a debit balance of dollar 28,750. For the two (2) jobs in process at year-end, one showed dollar 4,000 in direct materials and dollar 3,000 in direct labor. The job cost sheet for the second job showed dollar 6,000 in direct materials and dollar 4,500 in direct labor. If the company is using a predetermined overhead application rate based on direct labor cost, the rate is dollar _____ per direct labor hour.