Bradford Company derived the following cost relationship from a regression analysis of its monthly manufacturing overhead cost: C = $80,000 $12M where : C = monthly manufacturing overhead cost, and M machine hours The standard time required to manufacture one six-unit case of Bradford's single product is two machine hours. Bradford applies manufacturing overhead to production on the basis of machine hours, and its normal annual production is 50,000 cases Bradford's estimated variable manufacturing overhead cost for a month in which scheduled production is 5,000 cases would be? 15. Downton Tractor Company manufactures small tractors on an assembly -line basis. The units are started in Department Y. On January 1 of this year, the Work-in-Process inventory of Department Y consisted of 200 units 100% complete as to materials and 20% complete as to conversion. During the month, 800 units were started and 500 units were completed and transferred into finished goods inventory. The Work-in-Process on January 31 was 100% complete as to materials and 20% complete as to conversion Costs in process at the beginning of the period amounted to $100,000 for materials and $25,000 for conversion Costs incurred during the period were materials costs of $200,000 and conversion costs of $143,000. Compute (1) the unit product costs using the weighted average method and FIFO (2) costs of goods manufactured using the weighted average method