What is the expected return of a two-stock portfolio if you invest 40% of your investment into a stock with the expected return of 8% and 60% into a stock with the expected return of 13%? Round to the nearset hundredth percent. Answer in the percent format. Do not include % sign in your answer (i.e. If your answer is 4.33%, type 4.33 without a % sign at the end.)