Three years ago, Dorothy Schwartz’s mutual fund portfolio was worth $243,000. Now, because of an upturn in the economy, the value of her investment portfolio has increased to $320,000. Even though her investments have increased in value, she wonders if it is time to change her investment holdings, which consist of either aggressive growth funds or growth funds.

1. How much money has Ms. Schwartz gained in the last three years?

2. Given the above information, calculate the percentage of gain.

3. If you were in Dorothy Schwartz’s position, what actions would you take to evaluate your investment portfolio?