Purity Ice Cream Company bought a new ice cream maker at the beginning of the year at a cost of $20,000. The estimated useful life was four years, and the residual value was $2,180. Assume that the estimated productive life of the machine was 9,900 hours. Actual annual usage was 3,960 hours in year 1; 2,970 hours in year 2; 1,980 hours in year 3; and 990 hours in year 4

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Complete a separate depreciation schedule for each of the alternative methods. (Do not round intermediate calculations.)

Straight-line.

Year	Depreciation Expense	Accumulated Expense	Net Book Value
At acquisition
1
2
3
4

Units-of-production (use four decimal places for the per unit output factor)

Year	Depreciation Expense	Accumulated Expense	Net Book Value
At acquisition
1
2
3
4

Double-declining-balance.

Year	Depreciation Expense	Accumulated Expense	Net Book Value
At acquisistion
1
2
3
4