suppose expected returns & standard deviation of stock A & B are E(Ra)=0.15 E(Rb

suppose expected returns & standard deviation of stock A & B are E(Ra)=0.15 E(Rb)=0.25.Sa=0.1,Sb=0.2 so calculate expected return & standard deviation of a portfolio that is composed of 40 percent A & 60 percent B when correlation between returns on A & B is 0.5