Using the data and $100 invested in stocks, bonds and bills, confirm the values at 2011. Terminal value (future value) at 2011= $100(1+r1)(1+r2)...(1+r84) where r1= actual return given for 1928 r2=actual return given for 1929 r84=actual return given for 2011 for stocks, bonds and bills Second Question: Investing over 84 years is a little far fetched unless your grandfather was like Donald Trump's G.PA. Now consider dividing 1928-2011 to three sub-period of 1928-56 (28 years), 1956-1984 (28 yr) and 1984-2011 (27 yr). Let's see how investment of $100 in stocks, bonds, bills using again the actual returns provided in each asset class (stocks, bonds, bills) perform? Compare, the future value of each investment in the three asset class in the first 28 years with the second 28 years, and the last 27 years with a one time $100 investment in stocks, bonds, bills. What are the lessons we learn in this exercise as far as your future contribution to your own 401K is concerned?