Given below information, justify the economic profitability of the project through computing the PW, FW, AW and ERR (complete the solution for each method).

Cost/Revenue Estimates

Initial Investment: $50,000

Annual Revenues: 20,000

Annual Operating Costs: 2,500

Salvage Value @ EOY 5: 10,000

Study Period: 5 years

and MARR 20% per year