Please explain

(Portfolio expected rate of return) Barry Swifter is 60 years of age and considering retirement. Barry's retirement portfolio currently is valued at $750,000 and is allocated in Treasury bills, an S\&P 500 index fund, and an emerging market fund as follows: money from the emerging market fund and puts it in Treasury bills, what will be the expected rate of return on the resulting portfolio? a. Based on the current portfolio composition and the given expected rates of return, the expected rate of return for Barry's portfolio \%. (Round to two decimal places.) Data table