Med Inc. is considering the purchase of a new equipment to produce face marks. The equipment would be depreciated by the straight-line method over its 4-year life, and would have a $10,000 salvage value. Accounts payable will rise by $5,000 at time 0 but will be recovered at the end of the projects life. Revenues and annual operating costs are expected to be constant over the project's 4-year life. The other information is shown below.

Risk-adjusted WACC 12.0%

Equipment purchase cost (depreciable basis) $90,000

Sales revenues, each year $50,000

Annual operating costs (excl. depreciation) $20,000

Tax rate 30.0%

a). What is the project's NPV?

b). If the depreciation method is MACRS 3-year class (33%, 45%, 15%, 7%), will the NPV calculated be affected? (Briefly explain. No calculation is required)