Lakeside Inc. is considering replacing old production equipment with state-of-the-art technology that will allow production cost savings of $10,000 per month. The new equipment will have a five-year life and cost $420,000, with an estimated salvage value of $30,000. Lakesides cost of capital is 8%. Lakeside Inc. uses a straight-line depreciation method. Required: Calculate the payback period and the accounting rate of return for the new production equipment. (Round your answers to 2 decimal places.)

payback period is 3.50 years

accounting rate to return.........?