David Brown has $17,705.00 invested in American Cyanamid, $27,260.00 in Gannett Company, and $18,059.00 in Texas International. If American Cyanamid has an expected return of 18.72%, Gannett an expected return of 17.70%, and Texas International an expected return of 16.18%, what is the portfolio's expected return? (Answer the number of percentage, e.g, if your answer is 10%, answer 10 in the answering area. Do not round intermediate calculations. Round your answer to 2 decimal places.)