In: Accounting
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 On March 31, 2016, Canseco Plumbing Fixtures purchased equipment for $66,000. Residual value at the end of an estimated four-year service life is expected to be $6,000. The company expects the machine to operate for 15,000 hours.  | 
| a. | 
 Calculate depreciation expense for 2016 and 2017 using straight line method. 
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| b. | 
 Calculate depreciation expense for 2016 and 2017 using sum-of-the-years’-digits method. 
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| c. | 
 Calculate depreciation expense for 2016 and 2017 using double-declining balance method. 
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Answer a
Depreciation using Straight Line Method (SLM)
Cost of the eqipment = $66,000
Residual value = $6,000
Useful life of asset = 4 years
Annual depreciation under SLM = (Cost - Residual value) / useful life in years
= ($66,000 - $6,000) / 4
= $15,000
Answer -b
Calculation of depreciation using sum of years digit method:
Applicable percentage = Number of years of estimated life remaining at the beginning of the year
SYD
SYD = n(n+1)/2 where n is the estimated useful life of the asset.
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 Year  | 
 Remaining  | 
 
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 1 (2016)  | 
 4 years (on 01/04/2016)  | 
 4(4+1)/2 = 10  | 
 4/10 = 40%  | 
 (66,000 – 6,000) x 40% = $24,000 (01/04/2016 to 31/03/2017)  | 
 01/04/2016 to 31/12/2016 (9 month) = 24,000 X (9/12) = $18,000  | 
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 2 (2017)  | 
 3 years  | 
 10  | 
 3/10 = 30%  | 
 (66,000 - 6,000) X 30% = $18,000 (01/04/2017 to 31/03/2018)  | 
 01/01/2017 to 31/03/2017 (3 month) = 24,000 X (3/12) = $6,000  | 
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 01/04/2017 to 31/12/2017 (9 month) = 18,000 X (9/12) = $13,500  | 
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 Total depreciation in 2017 6,000 + 13,500 = $19,500  | 
Answer-c:
Calculation of depreciation using double-declining balance method:
Straight line method rate (SL rate) = ¼ X 100 = 25%
Declining balance rate = 2 X 25% = 50%
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 Year  | 
 Net book value (NBV),  | 
 Double-declining balance depreciation (beginning NBV X Declining balance rate)  | 
 Net book value,  | 
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 2016  | 
 $66,000 (on 01/04/2016)  | 
 $66,000 X 50% = $33,000 (01/04/2016 to 31/03/2017)  | 
 $33,000 X (9/12) = $24,750 (01/04/2016 to 31/03/2016)  | 
 $33,000  | 
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 2017  | 
 $33,000 (on 01/04/2017)  | 
 $33,000 X 50% = $16,500 (01/04/2017 to 31/03/2018)  | 
 $33,000 X (3/12) = $8,250 (01/01/2017 to 31/03/2017)  | 
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 $16,500 X (9/12) = $12,375 (01/04/2017 to 31/12/2017)  | 
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 Total depreciation = ($8,250 + $12,375) = $20,625  |