S99NOONQ1.2

2.Let's say you resolve to drink one less beer per month for the next 40 years. Assume that this represents a savings of $3 per month. If you take that extra $3 and invest it each month in your retirement account, how much extra will you have when you retire in 40 years? Assume your retirement account earns 12% per year, compounded monthly.

This is a future value of an annuity question:

0 1 2 3 4 ... 480
  3 3 3 3 3
PV         FV

You can calculate the PV of the annuity and then calculate the FV of that PV:

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