Analytical Hierarchy Process: An individual is in the process of buying a car and has narrowed the choices to three models: MI, M2, and M3. The deciding factors include purchase price (PP), maintenance cost (MC), cost of city driving (CD), and cost of rural driving (RD). The following table provides the relevant data for 3 years of operation:

Use the cost data to develop the comparison matrices. Assess the consistency of the matrices, and determine the choice of model.

Car Model PP($) M1 6,000 M2 8,000 M3 10,000 MC($) CD ($) 4500 2250 1125 1800 1200 600 RD ($) 1500 750 600