Math Problem Statement

At age 23​, someone sets up an IRA​ (individual retirement​ account) with an APR of 6​%. At the end of each month he deposits ​$55 in the account. How much will the IRA contain when he retires at age​ 65? Compare that amount to the total deposits made over the time period. Question content area bottom Part 1 After retirement the IRA will contain ​$    enter your response here. ​(Do not round until the final answer. Then round to the nearest cent as​ needed.) Part 2 The total deposits made over the time period is ​$    enter your response here. ​(Type a whole​ number.)

Solution

This problem involves a future value calculation for an annuity (specifically, a series of monthly deposits). We will use the future value formula for an ordinary annuity, where payments are made at the end of each period.

Part 1: Future Value Calculation

The formula for the future value of an ordinary annuity is:

FV=P×((1+r)n1r)FV = P \times \left( \frac{(1 + r)^n - 1}{r} \right)

Where:

  • FVFV is the future value.
  • PP is the regular monthly deposit ($55).
  • rr is the monthly interest rate (APR of 6% means 6%/12=0.0056\%/12 = 0.005 per month).
  • nn is the total number of deposits (from age 23 to 65, so 6523=4265 - 23 = 42 years, or 42×12=50442 \times 12 = 504 months).

Let's plug in the values:

  • P=55P = 55
  • r=0.005r = 0.005
  • n=504n = 504

Part 2: Total Deposits Made

The total deposits made over the time period can be calculated as:

Total Deposits=P×n\text{Total Deposits} = P \times n

Now, let me calculate the results for both parts.### Part 1: Future Value of the IRA The IRA will contain approximately $124,858.81 when the individual retires at age 65.

Part 2: Total Deposits Made

The total amount deposited over the period is $27,720.

Would you like any more details or have any other questions?

Here are 5 related questions to consider:

  1. How would the future value change with a higher interest rate?
  2. What if the monthly deposit was increased to $100?
  3. How does starting earlier (e.g., at age 20) impact the final amount?
  4. What if the deposits were made at the beginning of each month instead of the end?
  5. How much would be saved if the interest rate were compounded daily instead of monthly?

Tip: The earlier you start investing, even with smaller amounts, the more you benefit from compound interest over time.

Ask a new question for Free

By Image

Drop file here or Click Here to upload

Math Problem Analysis

Mathematical Concepts

Future Value of an Annuity
Compound Interest
Retirement Planning

Formulas

Future Value of an Annuity: FV = P × ((1 + r)^n - 1) / r
Total Deposits: Total Deposits = P × n

Theorems

Compound Interest Theorem

Suitable Grade Level

Grades 10-12 (High School Finance/Algebra)