can you solve the equtions on paper please.

3. A firm is evaluating new widget machines offered by four companies. The selections are mutually exclusive and only one will be bought. Use incremental rate of return analysis to decide which company's widget machine should be purchased based on a MARR of 10%. Company A Company B Company C Company D Initial Costs $100,000 $150,000 $180,000 $190,000 Annual Benefit $31,000 $40,000 $33,000 $25,000 Salvage Value $9,000 $30,000 $27,000 $5,000 Lifetime 4 years IRR 11.9% 9.2% 11.2% 8.0% 4 years 8 years 12 years