Cost $75,000; Salvage value: $10,000; Useful life: 10 Calculate annual depreciation on this machi... Cost $80,000; Salvage value: $10,000; Useful life: 10 Calculate annual depreciation on this machinery using doublr-declining balance method. Be careful not to exceed the salvage value. If the salvage value is zero, switch to straightline in the year when straight-line yields higher depreciation. (use the remaining valye as the starting point when you change)