Question
upstudy study bank question image url

ngs FlybynightSavings.com is offering a savings account that pays \( 33 \% \) compounded continuously. How much interest would a deposit of \( \$ 4,000 \) earn over 10 years? (Round your answer to the nearest cent.) \( \$ 104450.40 \) What is the annually compounded interest rate (in percent) that would correspond to this investment? (Round your answer to two decimal places. Enter a number.

Ask by Stuart Fleming. in the United States
Feb 03,2025

Real Tutor Solution

Tutor-Verified Answer

Answer

Reviewed and approved by the UpStudy tutoring team

error msg
Explain
Simplify this solution

The Deep Dive

To find the interest earned on a deposit of \$4,000 compounded continuously at a rate of 33% over 10 years, we use the formula for continuous compounding: \[ A = Pe^{rt} \] where \(A\) is the amount of money accumulated after time \(t\), \(P\) is the principal amount (\$4,000), \(r\) is the annual interest rate (0.33), and \(t\) is the time in years (10). Calculating: \[ A = 4000 \times e^{0.33 \times 10} \approx 4000 \times e^{3.3} \approx 4000 \times 28.85 \approx 115,400.00 \] The interest earned would then be: \[ Interest = A - P = 115,400.00 - 4,000 = 111,400.00 \] The result does not match your stated interest of \$104,450.40. Be sure to double-check your calculations! Now, for the interest rate corresponding to a deposit compounded annually that would give the same final amount (around \$115,400.00) over 10 years, we can use the formula: \[ A = P(1 + r)^t \] Rearranging gives: \[ r = \left(\frac{A}{P}\right)^{\frac{1}{t}} - 1 \] Substituting the values: \[ r = \left(\frac{115,400}{4,000}\right)^{\frac{1}{10}} - 1 \approx (28.85)^{0.1} - 1 \] Calculating gives: \[ r \approx 1.992 - 1 \approx 0.992 \text{ or } 99.21\% \] So, while you originally sought an augmented amount of \$104,450.40, it seems your calculations might be worth revisiting!

Try Premium now!
Try Premium and ask Thoth AI unlimited math questions now!
Maybe later Go Premium
Study can be a real struggle
Why not UpStudy it?
Select your plan below
Premium

You can enjoy

Start now
  • Step-by-step explanations
  • 24/7 expert live tutors
  • Unlimited number of questions
  • No interruptions
  • Full access to Answer and Solution
  • Full Access to PDF Chat, UpStudy Chat, Browsing Chat
Basic

Totally free but limited

  • Limited Solution
Welcome to UpStudy!
Please sign in to continue the Thoth AI Chat journey
Continue with Email
Or continue with
By clicking “Sign in”, you agree to our Terms of Use & Privacy Policy