In a process of purchasing a CNG car, one has to select the best car model out of various models. To select this, he$/$she decides to use analytic hierarchy process $($AHP$).$ The criteria have to be rated and the weights to be assigned based on the comparison matrix $[$C$]$ provided below.

$\backslash$table$[[$Criteria$,$Gas Mileage,Ride Comfort,Cost of Repair$],[$Gas Mil eage,$1,,],[$Ride Comfor,$5,1,3],[$Cost of Repair,$9,,1]]$

Do the following calculations

$($d$)$ Complete the criteria comparison matrix

$($e$)$ Calculate the criteria weights

$($f$)$ Check for the consistency for the assigned criteria weights