Read the following context;

Ms. Lee is working hard every day. She has been saving every month for 5 years an amount per month that represents a total sum of $75,500. Now she is planning her future, but she is still deciding what to do. When she started working, she didnt have a specific plan, but she has always dreamed of having a house in the valley.

After her previous considerations Mr. Lee was thinking about an alternative plan, to make the most of her savings, and try to afford to buy a bigger property in the future. She was offered to join some different projects. The current interest rate is 0,4%, but as it is expected to grow in the future, she is very concerned, not only about the cashflows these projects will produce, but also about getting her investment back as fast as possible so that she can invest this money in another place.

Calculate each of the following scenarios and then explain which of them is most interesting and why. Please show your workings for each option.

1. Investing $60,000 in a project that will produce cashflows of $10,400 per semester for 11 years.
2. Investing $40,000 in a project that will produce cashflows of $1,600 per month for 11 years.
3. Investing $30,000 in a project that will produce cashflows of $18,100 per year for 11 years.

Best option: