Math Problem Statement

You deposit $5000 in an account earning 3% interest compounded monthly. How much will you have in the account in 10 years?

Solution

To calculate the amount in the account after 10 years, we'll use the compound interest formula:

A=P(1+rn)ntA = P \left( 1 + \frac{r}{n} \right)^{nt}

Where:

  • AA is the amount in the account after interest.
  • PP is the principal (initial deposit), which is $5000.
  • rr is the annual interest rate, which is 3% (or 0.03 as a decimal).
  • nn is the number of times interest is compounded per year, which is 12 (monthly compounding).
  • tt is the number of years the money is invested, which is 10 years.

Now, plug in the values:

A=5000(1+0.0312)12×10A = 5000 \left( 1 + \frac{0.03}{12} \right)^{12 \times 10}

Let's calculate this:

A=5000(1+0.0025)120A = 5000 \left( 1 + 0.0025 \right)^{120}

A=5000(1.0025)120A = 5000 \left( 1.0025 \right)^{120}

A=5000×1.349356746.75A = 5000 \times 1.34935 \approx 6746.75

So, after 10 years, you will have approximately $6,746.75 in the account.

Would you like a more detailed explanation, or do you have any questions?

Related Questions:

  1. What would the balance be after 5 years?
  2. How does the compounding frequency affect the final amount?
  3. What would the final amount be if the interest rate were 5% instead of 3%?
  4. How can I calculate the interest earned after 10 years?
  5. If I increase my deposit to $10,000, what will my balance be after 10 years?

Tip:

For faster calculations, using a financial calculator or an online compound interest calculator can save you time on similar problems.

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Math Problem Analysis

Mathematical Concepts

Compound Interest
Exponential Growth
Algebra

Formulas

A = P(1 + r/n)^(nt)

Theorems

Compound Interest Theorem

Suitable Grade Level

Grades 9-12