Question: The Consolidated Oil Company must install antipollution equipment in a new refinery to meet federal clean-air standards. Four design alternatives are being considered, which will have capital investment and annual operating expenses as shown below. Assuming a useful life of 8 years for each design, no market value, a desired MARR of 10% per year, determine which design should be selected on the basis of the PW method. Confirm your selection by using the FW and AW methods. Which rule applies? Why?
