Math Problem Statement

CP will need save some money to open a new branch of convenient store in 3 years. A special account, which yields 2% compounded quarterly, is prepared for CP to set aside $18000 at the end of every 3-month period, to accumulate the money.

How much money will CP have after 3 years? $Answer

Solution

This is a problem involving compound interest with regular contributions. The formula used for future value in such a case (with periodic contributions and compound interest) is:

FV=P×(1+i)n1iFV = P \times \frac{{(1 + i)^n - 1}}{i}

Where:

  • FVFV is the future value.
  • PP is the regular contribution (in this case, $18,000).
  • ii is the interest rate per period (compounded quarterly, so we divide the annual rate by 4).
  • nn is the total number of periods (quarterly contributions for 3 years means 12 periods).

Given:

  • The annual interest rate is 2%, so i=0.024=0.005i = \frac{0.02}{4} = 0.005.
  • P=18,000P = 18,000 (the contribution made at the end of every 3 months).
  • n=4×3=12n = 4 \times 3 = 12 (the total number of quarterly periods over 3 years).

Now, let's calculate the future value.After 3 years, CP will have approximately $222,040.12 in the account.

Do you want more details or have any questions about the process?

Here are 5 related questions to explore this topic further:

  1. How would the final amount change if the interest were compounded monthly instead of quarterly?
  2. What if the interest rate increased to 3%? How would the future value be affected?
  3. How much would CP need to contribute each quarter to reach $250,000 in 3 years?
  4. Can we calculate the interest earned after 3 years?
  5. How does the time period affect the future value in compound interest scenarios?

Tip: Always remember that more frequent compounding periods (like monthly or weekly) result in more interest earned over time.

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Math Problem Analysis

Mathematical Concepts

Compound Interest
Future Value with Regular Contributions

Formulas

Future Value with Regular Contributions: FV = P × [(1 + i)^n - 1] / i

Theorems

Compound Interest Theorem

Suitable Grade Level

Grades 10-12