Helix Company purchased tool sharpening equipment inApril 1, 2010 for $72,000. The equipment was expected to have auseful life of four years, or 9,000 operating hours, and a residualvalue of $2,700. The equipment was used for 2,400 hours during2010, 4,000 hours in 2011, 2,000 hours in 2012, and 600 hours in2013.
Instructions: Determine the amount of depreciationexpense for the years ended December 31, 2010, 2011, 2012, and 2013by each of the following methods:
1. Straight-line
2. The units of activity method
3. Double Declining balance method
