Block Advertising pays Thomas Tibbs exist109, 800 per year. Assume that Block's advertising agents are expected to work a total of 8,000 direct labor hours in 2016. Block's estimated total indirect costs are exist288,000 and the allocation base used is direct labor hours. What is Block's predetermined overhead allocation rate? What indirect costs will be allocated to Client 507 if Tibbs works 16 hours to prepare the magazine ad? What is Block's predetermined overhead allocation rate? What indirect costs will be allocated to Client 507 if Tibbs works 16 hours to prepare the magazine ad