Answer and Explanation:
The computation of the depreciation expense is shown below:
1. Straight-line method:
= (Original cost - residual value) ÷ (useful life)
= ($24,000 - $2,400) ÷ (4 years)
= ($21,600) ÷ (4 years)
= $5,400
In this method, the depreciation is same for all the remaining useful life
2. Double-declining balance method:
First we have to find the depreciation rate which is shown below:
= One ÷ useful life
= 1 ÷ 4
= 25%
Now the rate is double So, 50%
In year 1, the original cost is 24,000, so the depreciation is $12,000 after applying the 50% depreciation rate
(c) Units-of-production method: or activity base method
First we have to find out the depreciation per hour which is shown below:
= (Original cost - residual value) ÷ (estimated operating hours)
= ($24,000 - $2,400) ÷ (15,000 hours)
= ($21,600) ÷ (15,000 hours)
= $1.44 per hour
Now for the first year, it would be
= Operating hours in first year × depreciation per hour
= 2,500 hours × $1.44
= $3,600