Computing Double-Declining-Balance Depreciation mpany purchased equipment for $50,000. For each of the following sets of assumptions a depreciation schedule tall years) for this equipment assuming that DeFond uses the prepare Useful life a. Four years b. Five years c. Ten years Residual Value $8,000 $3,000 $1,000 Round answers to the nearest whole number. Use rounded answers for subsequent calculations. a. Year Book Value Depreciation Expense