3. Suppose you have the following information: Security Return Standard Deviation 16% 20% B 12% 25% T-bills 4% ??? Beta 1.2 0.8 ??? a. What is the portfolio expected return and portfolio beta if you have 35% in asset A, 45% in asset B, and 20% in T-bills? b. What is the portfolio expected return if you have 140% invested in asset A, and the remainder in T- bills via borrowing at the risk-free rate? 7-48