Math Problem Statement

Find the present value PV of the given investment (in dollars). (Round your answer to the nearest cent.)

An investment earns 8% per year and is worth $6,000 after 8 months.

Solution

To find the present value (PV) of an investment that grows at 8% per year, we can use the formula for the present value in terms of future value (FV):

PV=FV(1+r)tPV = \frac{FV}{(1 + r)^t}

Where:

  • PVPV is the present value (what we are solving for),
  • FVFV is the future value, which is $6,000,
  • rr is the annual interest rate, which is 8% or 0.08,
  • tt is the time period in years. Since we are given 8 months, we convert it to years: 812=23 years.\frac{8}{12} = \frac{2}{3} \text{ years}.

Now, substitute the values into the formula:

PV=6,000(1+0.08)2/3PV = \frac{6,000}{(1 + 0.08)^{2/3}}

Let me calculate that for you.The present value (PV) of the investment is approximately $5,699.92.

Would you like further details or explanations? Here are five related questions for further exploration:

  1. How would the present value change if the interest rate were 10%?
  2. What would the present value be if the investment period were 1 year instead of 8 months?
  3. How does the present value formula differ for continuous compounding interest?
  4. What is the future value formula for this type of investment?
  5. How does inflation affect the real present value of money?

Tip: When converting months to years, always divide the number of months by 12 to get an accurate time period.

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Math Problem Analysis

Mathematical Concepts

Finance
Exponential Growth
Time Value of Money

Formulas

PV = FV / (1 + r)^t

Theorems

Present Value Formula

Suitable Grade Level

Grades 11-12 or College Level