The Universal Postal Service is considering the possibility of fiwing wind deflectors on the tops of 500 of their long-haul tractors. Three types of deflectors, with the folowing characteristics, are being considered (MARR10% per Capital investment Drag reduction Maintenance per year Useful life 12% $7 10 years ir-vanlage 1300 30% 96 6 years 24% $9 11 years lf 6% n drag reduction means 3% in fuel sa n s pe mile, how many miles do the tractors have to be driven per year before the windshear denector is fadre over the other deflectors? Over what range of mles driven per year is air-vantage the best choice? (Note: Fuel cost is expected to be $2.75 per galon, and average fuel consumption is S miles per gallon without the deflectors) Click the icon to view lhe interest and annuity table for discrete compounding when the MARR is 10% per year. Determine the range over which each deflector is preferred. (Round to the nearest hundreds Select Blowby