4. (10 points) An urban rail transit agency is considering the purchase of a new $30,000 ticketing system that will reduce travel time. The estimated life of the system is 10 years, at which time the value of the system will be $15,000. The expected travel- time savings per year is $5.000, and the annual maintenance and operating cost is $2,000. Is the project economically more desirable than the do-nothing alternative? Use the Rate of Return method. The minimum attractive rate of return (MARR) is 5%. Conduct your analysis on an equivalent uniform annual basis