Please solve NOT using excel.

Portfolios with two risky assets A portfolio is composed of two stocks, A and B. Stock A comprises 40% of the portfolio, while stock B comprises 60% of the portfolio. Stock A has a expected return of 20% and a standard deviation of return of 30%, while stock B has a expected return of 12% and a standard deviation of return of 15%. The correlation coefficient between the returns on A and B is .45. The expected return of this portfolio is The standard deviation of the return on this portfolio is