Math Problem Statement

On May 17, Jane took out a loan for $33,000 at 6% to open her law practice office. The loan will mature the following year on January 16. Using the ordinary interest method, what is the maturity value due on January 16?

Solution

To find the maturity value of the loan using the ordinary interest method (which assumes a 360-day year), we will follow these steps:

  1. Identify the principal (loan amount), interest rate, and time period:

    • Principal (P) = $33,000
    • Interest rate (r) = 6% or 0.06
    • Loan period: From May 17 to January 16 of the following year.
  2. Calculate the loan period in days:

    • From May 17 to January 16:
      • May 17 to May 31: 14 days
      • June: 30 days
      • July: 31 days
      • August: 31 days
      • September: 30 days
      • October: 31 days
      • November: 30 days
      • December: 31 days
      • January 1 to January 16: 16 days

    Total days = 14 + 30 + 31 + 31 + 30 + 31 + 30 + 31 + 16 = 244 days

  3. Use the formula for ordinary interest:

    Interest=P×r×t360\text{Interest} = P \times r \times \frac{t}{360}

    Where:

    • P=33,000P = 33,000
    • r=0.06r = 0.06
    • t=244t = 244 days

    Substituting these values:

    Interest=33,000×0.06×244360\text{Interest} = 33,000 \times 0.06 \times \frac{244}{360}

  4. Calculate the interest:

    Interest=33,000×0.06×0.67781,344.60\text{Interest} = 33,000 \times 0.06 \times 0.6778 \approx 1,344.60

  5. Calculate the maturity value:

    Maturity Value=Principal+Interest=33,000+1,344.60=34,344.60\text{Maturity Value} = \text{Principal} + \text{Interest} = 33,000 + 1,344.60 = 34,344.60

Final Answer:

The maturity value due on January 16 is $34,344.60.

Would you like more details or have any questions?

Here are 5 related questions for further exploration:

  1. What would the maturity value be if the loan had an interest rate of 7%?
  2. How would the maturity value change if the loan period was extended by one month?
  3. What is the difference between ordinary interest and exact interest methods?
  4. How would the calculation change if the year was not considered 360 days?
  5. How does compounding interest affect the maturity value of a loan?

Tip: Always double-check the time period when calculating interest to ensure accuracy, especially when using ordinary interest which assumes a 360-day year.

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Math Problem Analysis

Mathematical Concepts

Ordinary Interest Method
Simple Interest
Loan Period Calculation

Formulas

Interest = Principal × Rate × (Time / 360)
Maturity Value = Principal + Interest

Theorems

Ordinary Interest Calculation

Suitable Grade Level

Grades 9-12