Math Problem Statement

Calculate the amount of money Phillip had to deposit in an investment fund growing at an interest rate of 3.50% compounded annually, to provide his daughter with $11,500 at the end of every year, for 4 years, throughout undergraduate studies. Round to the nearest cent

Solution

To determine the amount of money Phillip needed to deposit in a fund that grows at an interest rate of 3.50% compounded annually to provide his daughter with $11,500 at the end of every year for 4 years, we will use the Present Value of an Annuity formula.

Given:

  • Future payment (PMTPMT) = $11,500
  • Number of periods (nn) = 4 years
  • Interest rate per period (ii) = 3.50% = 0.035

Formula for Present Value of an Annuity:

PV=PMT(1(1+i)ni)PV = PMT \left( \frac{1 - (1 + i)^{-n}}{i} \right)

Step-by-Step Calculation:

  1. Calculate the factor: (1+i)n=(1+0.035)41.03540.8792(1 + i)^{-n} = (1 + 0.035)^{-4} \approx 1.035^{-4} \approx 0.8792

  2. Subtract this from 1: 10.8792=0.12081 - 0.8792 = 0.1208

  3. Divide by the interest rate: 0.12080.0353.4514\frac{0.1208}{0.035} \approx 3.4514

  4. Multiply by the annual payment: PV=11500×3.451439691.10PV = 11500 \times 3.4514 \approx 39691.10

Therefore, Phillip needs to deposit approximately $39,691.10 to provide his daughter with $11,500 at the end of every year for 4 years.

Would you like more details or have any questions?

Here are some related questions you might want to explore:

  1. What would be the present value if the interest rate was 5% instead?
  2. How much would Phillip need to deposit if the payments were made at the beginning of each year?
  3. What is the total amount Phillip's daughter will receive over the 4 years?
  4. How much interest will Phillip earn over the 4 years?
  5. How would the present value change if the duration was 5 years instead of 4?

Tip: When calculating present value, ensuring the interest rate and periods align with the compounding and payment schedule is crucial for accurate results.

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Math Problem Analysis

Mathematical Concepts

Finance
Present Value
Annuities
Compound Interest

Formulas

Present Value of an Annuity formula

Theorems

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Suitable Grade Level

Advanced High School / College