Mark Googal owns a garage and is contemplating purchasing a tire retreading machine for $16,500. After estimating costs and revenues, Mark projects a net cash inflow from the retreading machine of $3,630 annually for 10 years. Mark hopes to earn a return of 11% on such investments. What is the present value of the retreading operation? Should Mark Googal purchase the retreading machine? (For calculation purposes, use 5 decimal places as displayed in the factor table provided.) (Round answer to 2 decimal places, e.g. 15.25.) Click here to view the factor table. (a) The present value of the retreading operation is (b) Mark Googal should purchase the retreading machine.