Two trafic signal systems are being considered for an intersection. One system costs $32,000 for installation and has an efficiency rating of 75%, requires 26 W power output incurs a user cost o $0.24 per vehicle, and has a life of 9 years. A second system costs $45,000 to install, has an efficiency rating of 88%, requires 32 kW power (output), has a user cost of $0.21 per vehicle, and has a life of 17 years. Annual maintenance costs are $70 and $95, respectively. MARR-8% per year. How many vehicles must use the intersection to justify the second system when electricity costs SO.07kWh? Assume salvage value for each system equals zero. Project the difference in the user cost as savings for the second system. There are approximately 8,760 hourslyear. Click the icon to view the interest and annuity table or discrete compounding when the MARR s 8% per year. At leastvehicles per day must use the intersection to justify the second system. (Round up to the nearest whole number.) Two trafic signal systems are being considered for an intersection. One system costs $32,000 for installation and has an efficiency rating of 75%, requires 26 W power output incurs a user cost o $0.24 per vehicle, and has a life of 9 years. A second system costs $45,000 to install, has an efficiency rating of 88%, requires 32 kW power (output), has a user cost of $0.21 per vehicle, and has a life of 17 years. Annual maintenance costs are $70 and $95, respectively. MARR-8% per year. How many vehicles must use the intersection to justify the second system when electricity costs SO.07kWh? Assume salvage value for each system equals zero. Project the difference in the user cost as savings for the second system. There are approximately 8,760 hourslyear. Click the icon to view the interest and annuity table or discrete compounding when the MARR s 8% per year. At leastvehicles per day must use the intersection to justify the second system. (Round up to the nearest whole number.)