The investment seeks the highest total return over time consistent with an emphasis on both capital growth and income. The fund pursues its objective by investing in a diversified portfolio of other T. Rowe Price stock and bond mutual funds that represent various asset classes and sectors. It is managed based on the specific retirement year (target date 2055) included in its name and assumes a retirement age of 65. The target date refers to the approximate year an investor in the fund would plan to retire and likely stop making new investments in the fund.