A manager buys three shares of stock today, and then sells one of those shares each year for the next 3 years. His actio

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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.
a. Calculate the time-weighted geometric
average return on this “portfolio.” (Do not round
intermediate calculations. Round your answer to 2 decimal
places.)
b. Calculate the time-weighted arithmetic
average return on this portfolio. (Do not round
intermediate calculations. Round your answer to 2 decimal
places.)
c. Calculate the dollar-weighted average
return on this portfolio. (Do not round intermediate
calculations. Round your answer to 2 decimal
places.)