A manufacturing company is planning to install an equipment having a first cost of $90K and a salvage value, after 15 years, of $10,520. The company uses an interest rate of 10%. Find the PW of the...

A manufacturing company is planning to install an equipment having a first cost of $90K
and a salvage value, after 15 years, of $10,520. The company uses an interest rate of 10%.
Find the PW of the depreciation deductions for straight-line, SOYD, double-declining
balance. Rank the strategies in order of their attractiveness. Identify/determine the best
method.