Answer:
Double-declining balance method
Explanation:
First we have to find the depreciation rate which is shown below:
= One ÷ useful life
= 1 ÷ 4
= 20%
Now the rate is double So, 40%
In year 1, the original cost is $15,000, so the depreciation is $6,000 after applying the 50% depreciation rate
And, in year 2, the depreciation is ($15,000 - $6,000) × 40% = $3,600
And, in year 3, the depreciation is ($15,000 - $6,000 - $3,600) × 40% = $2,160
