Calculate economic depreciation (an annual fixed cost) for a combine you purchased new on January 1st 2019. Purchase price: $355,000, Useful Life 4 Years, Salvage Value, $200,000. To estimate your annual fixed costs of owning this combine use the methods, percentages and rules-of- thumb discussed in class. Use Straight Line Depreciation to Calculate Depreciation: $69,375 $88,750 $50,000 $38,750