Holding period and annual investment) returns. Bohenick Classic Automobiles restores and rebuilds old classic cars. The company purchased and restored a classic 1957 Thunderbird convertible 8 years ago for $9,400.00. Today at auction, the car sold for $103,400.00. What are the holding period return and the annual return on this investment? What is the holding period return of the car? % (Round to two decimal places.) Historical returns. Calculate the arithmetic average return of U.S. Treasury bills, long-term government bonds, and large-company stocks for 1987 to 1996. Which had the highest return? Which had the lowest return? On the left side, click on the Spreadsheet Learning Aid to see Table 8.1Year-by-Year Returns, 1950-1999. What is the average return of U.S. Treasury bills for 1987 to 1996? % (Round to two decimal places.)