Ramson Corporation is considering purchasing a machine that would cost $283,850 and have a useful life of 5 years. The machine would reduce cash operating costs by $81,100 per year. The machine would have a salvage value of $107,100 at the end of the project. (Ignore income taxes.)

Required:

a. Compute the payback period for the machine. (Round your answer to 2 decimal places.)

b. Compute the simple rate of return for the machine. (Round your intermediate calculations to the nearest whole dollar and your final answer to 2 decimal places.)