a certain highway project is planned that would have an initial investment cost of $1.5 million. The user benefits for the facility (in excess of maintenance cost) are estimated to be $105,000 per year over its useful life of 20 years. At the end of the 20-year period, the residual (salvage) value would be $400,000. On the basis of present worth concept, should the project be built? Assume an interest rate of 6 percent. What is the benefit-cost ratio?