A manager buys three shares of stock today, and then sells one of those shares each year for the next 3 years. His actions and the price history of the stock are summarized below. The stock pays no dividends. Time 0 Price $ 200 220 Action Buy 3 shares Sell share Sell 1 Share Selli share 220 220 a. Calculate the time weighted geometric average return in this "portfolio." (Do not round intermediate calculations. Round your answer to 2 decimal places.) Geometric average retum % b. Calculate the time weighted arithmetic average return on this portfolio. (Do not round intermediate calculations. Round your answer to 2 decimal places.) Arithmetic average retum C. Calculate the dollar weighted average return on this portfolio. (Do not round intermediate calculations. Round your answer to 2 a. Calculate the time-weighted geometric average return on this "portfolio." (Do not round intermediate calculations. Round you answer to 2 decimal places.) Geometric average retum b. Calculate the time weighted arithmetic average return on this portfolio. (Do not round intermediate calculations. Round your answer to 2 decimal places.) Arithmetic average retum % c. Calculate the dollar-weighted average return on this portfolio. (Do not round intermediate calculations. Round your answer to 2 decimal places.) Dollar-weighted average return %