Answer:
The straight-line depreciation method
Explanation:
Under the straight-line method, the depreciation amount is a percentage of the asset value at cost. The percentage is the depreciation rate. It is obtained by dividing one by the number of useful years.
i.e. depreciation rates =1/ useful life x 100.
Since the depreciation rate will be constant, and the asset cost does not change its value, the depreciation amount will be a constant figure throughout the useful life of the asset.