ou eir max and air lowing three proposals, with a minimum attractive rate of retum of 10 percent and an 1. Use the benefit-cost ratio method to select the most economic scheme from the fol analysis period of 30 years. Os and asible. date at - con- Initial Capital Cost X $1000 mized Salvage Value at 30 years Maintenance Costs X $1000 User Costs X 1000 Scheme X 1000 Kings Do nothing 6,500 10,200 17,500 250 170 100 90 8000 6500 5600 4500 B C 500 1200 2500