I would like to see how it is done without excel or a program, I.E. hand calculation

Switching to powder coating technology will reduce the emission of volatile organic carbons (VOCs) for a firm?s production process. The initial cost is $200,000 with annual costs of $50,000 and savings of $90,000 in the first year. Savings are projected to increase by $3000 annually after Year 1. The salvage value 10 years from now is projected to be $30,000. What rate of return will the firm make on this investment