West Hilton
01/13/2023 · Junior High School
Arnett College predicts that in 18 years it will take \( \$ 350,000 \) to attend the college for four years. Hailey has a substantial amount of cash and wishes to invest a lump sum of money for her child's college fund. How much should Hailey put aside in an account with an APR of \( 11 \% \) compounded monthly in order to have \( \$ 350,000 \) in the account in 18 years? Round your answer to the nearest cent, if necessary.
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Tutor-Verified Answer
Step-by-step Solution
To determine how much Hailey should invest today to have \( \$350,000 \) in 18 years with an annual percentage rate (APR) of \( 11\% \) compounded monthly, we can use the formula for the present value of a future sum:
\[
PV = \frac{FV}{(1 + r/n)^{nt}}
\]
Where:
- \( PV \) = present value (the amount to invest today)
- \( FV \) = future value (the amount desired in the future, which is \( \$350,000 \))
- \( r \) = annual interest rate (as a decimal, so \( 0.11 \) for \( 11\% \))
- \( n \) = number of times the interest is compounded per year (monthly compounding means \( n = 12 \))
- \( t \) = number of years the money is invested (which is \( 18 \) years)
Now, we can plug in the values:
- \( FV = 350,000 \)
- \( r = 0.11 \)
- \( n = 12 \)
- \( t = 18 \)
First, we calculate \( r/n \):
\[
r/n = \frac{0.11}{12} \approx 0.00916667
\]
Next, we calculate \( nt \):
\[
nt = 12 \times 18 = 216
\]
Now we can substitute these values into the present value formula:
\[
PV = \frac{350,000}{(1 + 0.00916667)^{216}}
\]
Calculating \( (1 + 0.00916667)^{216} \):
\[
(1 + 0.00916667)^{216} \approx (1.00916667)^{216} \approx 6.022575
\]
Now we can calculate \( PV \):
\[
PV = \frac{350,000}{6.022575} \approx 58,157.63
\]
Thus, Hailey should invest approximately \( \boxed{58157.63} \) today to have \( \$350,000 \) in 18 years.
Quick Answer
Hailey should invest approximately \( \$58,157.63 \) today to have \( \$350,000 \) in 18 years.
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