Problem 1 Red Brick Company purchased a front-end loader and tractor for $82,000 on April 1 of year 1. The tractor has an estimated useful life of six years or 25.800 hours and a residual value of $2,000. Listed in the chart below is the number of hours the tractor and front-end loader were used during year 1 through 7. Year # of hours used 1 3,990 2 4,270 3 3,990 4.150 5 4.245 6 4,075 7 1,080 4 a) Calculate depreciation using the straight line method for years 1 through 7. b) Calculate depreciation using units of production method for years 1 through 7. | c) Calculate depreciation using declining balance method for years 1 through 7