Amy Plisko is 23 years old and plans to retire in 32 years when she is 55 years old. Amy just graduated from a university in the West

Upon graduation, she took a job with a starting annual salary of $50,000. Amy asks you to answer the following two questions:
1. If her salary increases at a rate roughly equal to the U.S. long-run average annual rate of inflation over the past 80 years (about 3% per year), how large will her annual salary be in her last year before retirement? (Use 32 years.)
2. If her salary increases at a rate roughly equal to the U.S. long-run average annual rate of return on common stocks over the past 80 years (about 10.5% per year), how large will her annual salary be in her last year before retirement? (Use 32 years.)

After hearing your answers, Amy says, "WOW! That's quite a difference." She decides that she would like an income of $500,000 per year each year in retirement, provided in equal annual end-of-the-year cash flows. These cash flows need to last for 40 years, and her investments would earn an annual rate of return of 7% during her retirement.

Amy's final question to you is how much money must she save in equal annual end-of-the-year cash flows for the next 32 years to provide for her desired retirement, if her investments earn roughly the same rate of return as those earned by U.S. small stocks over the last 80 years (geometric average is about 12% per year).

Use a calculator to determine the answers to the different parts of the problem.
What will be an ideal response?

Answer:
1. Calculator Solution:
MODE = END
INPUT 32 3.0 -50,000 0 ?
KEY N I/Y PV PMT FV
CPT 128,754.14

2. Calculator Solution:
MODE = END
INPUT 32 10.5 -50,000 0 ?
KEY N I/Y PV PMT FV
CPT 1,220,570.59

3. Calculator solution for the PV of her retirement salary at T = 32:
MODE = END
INPUT 40 7.0 ? 500,000 0
KEY N I/Y PV PMT FV
CPT 6,665,854.42

4. Calculator solution for the PMTs needed to get to the FV of $6,665,854.42 at T = 32:
MODE = END
INPUT 32 12.0 0 ? 6,665,854.42
KEY N I/Y PV PMT FV
CPT 21,866.18