Razar Sharp Company purchased equipment on July 1 2010 for $22140. The equipme

Razar Sharp Company purchased equipment on July 1 2010 for $22140. The equipment was expected to have a useful life of three years or 4320 operating
hours and a residual value of $540. The equipment was used for 800 hours during 2010 1500 hours in 2011 1300 hours in
2012 and 720 hours in 2013.

Instructions:

1. Determine the amount of depreciation expense for the years ended December 31 2010 2011 2012 and 2013 by (a) thestraight-line method (b) theunits-of-production method and (c) thedouble-declining-balance method. Do not round your intermediate calculations but round final answers to the nearest dollar.

a. Straight-line method

$

b. Units-of-production method

c. Double-declining-balance method