Palmer Corp. is considering the purchase of a new piece of equipment. The cost savings from the equipment would result in an annual increase in net income after tax of $100,000. The equipment will have an initial cost of $400,000 and have a 7-year life. If the salvage value of the equipment is estimated to be $75,000, what is the payback period?

2.73 years

7.00 years

4.00 years

4.75 years