Discuss how depreciation is calculated under the straight-line, units-of-production, and double-declining-balance methods. Provide a brief numerical example

Question:

Discuss how depreciation is calculated under the straight-line, units-of-production, and double-declining-balance methods. Provide a brief numerical example that would indicate why a company might use straight- line depreciation for income statement purposes and double-declining-balance depreciation for tax purposes.