Perdue Company purchased equipment on April 1 for $39,960. The equipment was expected to have a useful life of three years, or 4,320 operating hours, and a residual value of $1,080. The equipment was used for 800 hours during Year 1, 1,500 hours in Year 2, 1,300 hours in Year 3, and 720 hours in Year 4. double declining depreciation?