Scottie Chaffer has a portfolio of 4 stocks. Xhe currently has 13.20% of ihr portfolio invested in (Baker Hughes, a GE Company) in the Oil & Gas Equipment & Services sector, 17.10% in (Martin Marietta Materials) in the Construction Materials sector, 11.10% in (Equifax Inc.) in the Research & Consulting Services sector, 58.60% in (Noble Energy Inc) in the Oil & Gas Exploration & Production sector. They have expected returns of: 41.92%, 40.43%, 6.28%, 25.09% respectively---what is the expected return on the portfolio