Assume that you manage a misy portfolio with an expected rate of retum of 17 and a standard devation of 35%. The fibill rate is 45% constraint that the overall portfolios standard deviation will not exceed 25%, Required: a. What is the investrient proportion, y (Do not round intermediate calculations. Alound your anwwer to 2 decimal ploces.) b. What is the expected rate of return on the overall portilob? (Do not round intermedibte calculations. Hound your answer to 2 decimal places.)