finance help please

Suppose that you have $250 million to invest and you are considering the following two opportunities from which to construct a new portfolio (P) with a standard deviation of 40%: A risk-free asset (F) earning 6% per year. A well-diversified risky mutual fund (M) with expected return of 20% per year and standard deviation of 30%. a. Compute the expected rate of return of your new portfolio (P). b. Compute the Sharpe ratio of portfolio (P) and the risky mutual fund (M)