Answer :
Net present value = -$30,284.90
Net present value = -$15,699.78
Explanation :
As per the data given in the question,
Particulars                 Amount     Factor              Purchase
Cost of new vehicle -$33,500    1                    -$33,500.00
Annual Maintenance -$1,200   3.605             -$4,326.00
Less : Salvage value    $13,300 0.567              $7,541.10
Net Present value                                             -$30,284.90
Particulars                  Amount       Factor           Purchase
Cost of new vehicle       $0                1                      $-
Annual Maintenance -$4,355       3.605          -$15,699.78
Less : Salvage value        $0             0.567              $-
Net Present value                                               -$15,699.78
We simply multiplied the amount with the factor so that the purchase amount could come