Math Problem Statement
How much should be invested now at 4.65% compounded annually to have $42,000 in 11 years?
Solution
To determine how much should be invested now to have $42,000 in 11 years at an interest rate of 4.65% compounded annually, we use the formula for compound interest:
Where:
- is the amount of money you want in the future ($42,000).
- is the initial investment (the amount we need to find).
- is the annual interest rate (4.65% or 0.0465).
- is the number of times the interest is compounded per year (since it's compounded annually, ).
- is the time in years (11 years).
We need to solve for :
Substituting the given values:
[ P = \frac{42,000}{\left(1 + \frac{0.0465}{1}\right)^{1 \times
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Math Problem Analysis
Mathematical Concepts
Compound Interest
Exponential Growth
Formulas
A = P(1 + r/n)^(nt)
P = A / (1 + r/n)^(nt)
Theorems
-
Suitable Grade Level
Grades 10-12
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