4. ABC Company is interested in replacing a machine with a new one. The old machine has a salvage value of $20,000 now and no salvage value 3 years later, if rebuilt. If the old machine is kept, it must be rebuilt one year after at a predicted cost of $30,000. The new machine costs $120,000 and had a predicted salvage value of $25,000 at the end of three years. If purchased, the new machine will allow cash savings of $40,000 for the first year and $20,000 for each year of its remaining life. The cash savings all occur at the end of the respective year. Required: What is the net present value of purchasing the new machine if ABC Company has a required rate of return of 14%? (15%)