Please show work and excel.

(a) Below you are given the annual return on Berkshire Hathaway stock for the past 5 years 2016 2017 2018 2019 2020 23.4% 21.9% 2.8% 11.0% 2.4% Given this data, calculate the Arithmetic and Geometric Mean returns for this five-year period. Show your work. Arithmetic Mean = Geometric Mean = (b) You purchase a piece of capital equipment for $100,000 and a projected salvage value of $10,000 at the end of its 5-year useful like and this concurs with the MACRS schedule). Show your work. What would be the book value of the capital after year 3 under a straight-line depreciation schedule? BV = What would be the book value of the capital after year 3 under a MACRS depreciation schedule? BV =