1. (20 points) Kingsville plans to buy a street-cleaning machine. A used cleaning vehicle will cost $85.000 and have a $20,000 salvage value at the end of its five year life. A new system with advanced features will cost $150,000 and have a $40,000 salvage value at car life. The new system is expected to reduce labor hours compared with the used system. Current street cleaning activity requires the used system to operate 8 hours per day for 20 days per month. Labor costs $50 per hour and MARR is 12% per year. Find the breakeven labor hours for the new system. 4. (25 points) Resolve problem 1 using Solver