The return on a portfolio that is equally invested in large-company stocks and long-term government bonds is ???? percent. The return on a portfolio that is equally invested in small-company stocks and Treasury bills is ???? percent. Please include formulas used. Average return: Large-company stocks 11.8 Small-company stocks 16.5 Long-term corporate bonds 6.4 Long-term government bonds 6.1 U.S. Treasury bills 3.6 Inflation 3.1