Grouper Growth Farms, a farming cooperative, is considering purchasing a tractoc for $559,050. The machine has a 10-year life and an estimated salvage value of $43,000. Delivery costs and set-up charges will be $12,800 and $410, respectively. Grouper Growth uses straight-line depreciation and has a required rate of return of 9%. Grouper Growth estimates that the tractor will be used fivitimes a week with the average charge to the individual farmers of $410. Fuel is $55 for each use of the tractor. The present value of an annuity of 1 for 10 years at 9% is 6.41766 . Clickhere to view PV tables. For the new tractor, compute the