In: Finance
Today, Ralph and Sara each have $500,000 in an investment account. No other contributions will be made to their investment accounts. Both have the same goal: They each want their account to reach $1.5 million, at which time each will retire. Ralph has his money invested in risk-free securities with an expected annual return of 4 percent. Sara has her money invested in a stock fund with an expected annual return of 11 percent. How many years after Sara retires will Ralph retire? Pick the closest answer.
| a | 
 16.24  | 
|
| b | 
 19.0  | 
|
| c | 
 10.53  | 
|
| d | 
 17.48  | 
|
| e | 
 28.01  |