Calculate the annual arithmetic mean and geometric mean return on the following security, purchase price =$27; first-year dividend =$4; price after one year =$32; second-year dividend =$4; selling price after two years =$25. (Round intermediate calculations to 3 decimal places, e.g. 15.251\% and the final answers to 2 decimal places, e.g. 15.25\%.) Arithmetic average return % Geometric mean return %