The Ortman Company manufactures products in two departments: Mixing and Packaging. The company allocates manufacturing overhead using a single plantwide rate with direct labor hours as the allocation base. Estimated overhead costs for the year are $758,200, and estimated direct labor hours are 340,000. In October, the company incurred 60,000 direct labor hours. Read the requirements. ... Requirement 1. Compute the predetermined overhead allocation rate. Round to two decimal places. Begin by selecting the formula to calculate the predetermined overhead (OH) allocation rate. Then enter the amounts to compute the allocation rate. Requirement 2. Determine the amount of overhead allocated in October. Begin by selecting the formula to allocate overhead costs. The overhead allocated in October is Predetermined OH = allocation rate Allocated mfg. = overhead costs