Final answer:
Using a financial calculator, Rina can determine the future value of her ordinary annuity at ages 60 and 65 by saving $20,000 annually with a 12% return. She can also calculate her annual retirement withdrawal based on her life expectancy and the accumulated amount, demonstrating the importance of early saving and compound interest.
Step-by-step explanation:
The question relates to the calculation of future value of an ordinary annuity and the amount that can be withdrawn annually in retirement, using a financial calculator. To find out how much Rina will have at age 60, she will save $20,000 per year for 25 years with a 12% return, which involves calculating the future value of an ordinary annuity. The same process would then be repeated to find the future value at age 65, with deposits for an additional 5 years. Finally, to determine how much Rina can withdraw each year after retirement, now dealing with an annuity due since she withdraws at the end of each year, a different calculation is required, which involves solving for the payment (PMT) given the future value, rate, and number of periods.
To calculate the annual withdrawal after retirement, we need the future value at retirement, the expected return rate, and the remaining life expectancy. For instance, with a future value accumulated, a 12% return rate, and a 30-year expectancy upon retirement at age 60, or a 25-year expectancy if retiring at age 65, we use the annuity due formula to solve for the fixed annual withdrawal. The power of compound interest significantly impacts these calculations, making saving early and consistently essential for a secure retirement.