answer only please

Uncle Fred recently died and left $320,000 to his 50 -year-old favorite niece. She immediately spent $120,000 on a town home but decide to invest the balance for her retirement at age 65 . What rate of return must she earn on her investment over the next 15 years to permit her to withdraw $60,000 at the end of each year through age 85 if her funds earn 9 percent annually during retirement? Use Appendix A and Appendix D to answer the question. Round your answer to the nearest whole number. (3) %