posted by cj .
John Roberts has $42,180.53 in a brokerage account, and he plans to contribute an addtional $5,000.00 to the account at the end of the year. the brokerage account has an expected annual return of 12%. If John's goal is to accumulate $250,000.00 in the account, how many years will it take John to reach his goal?
An Excel spreadsheet is very good for these types of problems.
It may help if I knew how to do the equation.
In year 0, he has B0=42,180.53
In year 1, he has B1=B0*1.12 + 5000.
In year 2, he has B2=B1*1.12 + 5000.
Continue until Bn >= 250000.