Zapata makes handheld calculators in two models-basic and professional--and wants to refine its costing system by allocating overhead using departmental rates. The estimated $1,149,500 of manufacturing overhead has been divided into two cost pools: Assembly Department and Packaging Department. The following data have been compiled: (Click the icon to view the data.) Read the requirements. Compute the predetermined overhead allocation rates using machine hours as the allocation base for the Assembly Department and direct labor hours for the Packaging Department. Begin by selecting the formula to calculate the predetermined overhead (OH) allocation rate. Then enter the amounts to compute the allocation rate for each department. (Abbreviation used: Qty quantity. Enter the allocation rates to the nearest cent.) Estimated overhead costs Assembly 460000 + Estimated qty of the allocation base 287500 Enter any number in the edit fields and then click Check Answer.. 4 parts remaining Predetermined OH allocation rate 1.60 Clear All Check Answer