1. Calculating Average Returns Assume AAA stock price evolves as follows: Year Buy or Sell Shares Price at Beginning of Year Dividend paid at Year End 2012 Buy 500 shares $35 $1.20 2013 Sell 200 shares $48 $2.00 2014 Buy 100 shares $21 $2.30 2015 Sell 400 shares S50 $1.00 a) What is the dollar-weighted return (IRR) for the four-year period? b) What is the time-weighted return-arithmetic average? Geometric average