Cainas Cookies purchases equipment on 1/1/15 for $40,000, with an estimated 4 year life, to be used for a total of 24,000 baking hours, with a $4,000 residual value. She bakes for 4,000 hours in 2015 and 7,000 hours in 2016. What is her depreciation expense for 2016 if she uses Double declining balance method?

Cainas Cookies purchases equipment on 1/1/15 for $40,000, with an estimated 4 year life, to be used for a total of 24,000 baking hours, with a $4,000 residual value. She bakes for 4,000 hours in 2015 and 7,000 hours in 2016. What is her depreciation expense for 2016 if she uses Double declining balance method? $18,000 $9,000 c $20,000 $10,000