Problem 11-19 (Algo) You are managing a portfolio of $1.0 mililon. Your target duration is 16 years, and you can choose from two bonds: a zero-coupon bond with maturity five years and a perpetuity, each currently ylelding 5%. Required: a. How much of (s) the zero-coupon bond and (is the perpetuity will you hold in your portfolio? (Do not round Intermedlate calculations. Round your answers to 2 decimal places.) b. How wil these fractions change next yearif target duration is now fifteen years? (Do not round Intermedlate colculations. Round your onswers to 2 decimal places.)