Current Attempt in Progress Vaughn Company is considering the purchase of a new machine. The invoice price of the machine is $70,000, freight charges are estimated to be $5,000, and installation costs are expected to be $5,600. The annual cost savings are expected to be $20,000 for 10 years. Calculate the cash payback period. (Round answer to 2 decimal places, e.g. 15.25.) Cash payback period years