Exercise 10-138 Determining the payback period with uneven cash flows obile model. Vienna Snowmobile Company is considering whether to invest in a particular new snowm The model is top-of-the-line equipment for which Vienna expects high demand during the first yea is available for rent. However, as the snowmobile ages, it will become less desirable and its revenues are expected to decline. The expected cash inflows and outflows follow: rental 2019 Purchase price 2019 Revenue 2020 Revenue 2021 Revenue 2021 Major overhaul 2022 Revenue 2023 Revenue 2023 Salvage value $70,000 $40,000 0,000 27,500 10,000 15,000 10,000 8,000 Required a. Determine the payback period using the accumulated cash flows approach. b. Determine the payback period using the average cash flows approach Exercise 10-14B Determini"L