Thomas Has Decided to Borrow Money to Invest in a Markowitz

Thomas has decided to borrow money to invest in a Markowitz portfolio that is determined by the tangent from the risk-free asset to the efficient frontier. The tangent portfolio on the efficient set has an expected return of 18 percent and a standard deviation of 15 percent. The rate at which he can borrow money is 5 percent with a standard deviation of 0 percent (by definition). Thomas decides to borrow 50 percent of the funds he will invest in the selected portfolio. Calculate the expected return and standard deviation of his portfolio.