You plan on making a $235. 15 monthly deposit into an account that pays 3. 2% interest, compounded monthly, for 20 years. At the end of this period, you plan on withdrawing regular monthly payments. Determine the amount that you can withdraw each month for 10 years, if you plan on not having anything in the account at the end of the 10 year period and no future deposits are made to the account. A. $769. 27 b. $767. 23 c. $78,910. 41 d. $79,120. 84.

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Answer:

10

Explanation:

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The amount of money that can be withdrawn each month for 10 years is equal to: A. $769. 27.

Given the following data:

  • Time = 20 years
  • Monthly payment = $235.15
  • Interest rate = 3.2%

To determine the amount of money that can be withdrawn each month for 10 years:

First of all, we would convert the compounded interest rate into an effective monthly interest rate as follows:

[tex]r = \frac{0.032}{12} = 0.00267[/tex]

Next, we would calculate the future value for these annuities by using this formula:

[tex]A = \frac{P[(1+r)^{12t} - 1]}{r}[/tex]

Where:

  • A is the future value.
  • P is the monthly payment or principal.
  • r is the effective monthly interest rate.

Substituting the given parameters into the formula, we have;

[tex]A = \frac{235.15[(1+0.00267)^{12 \times 20}\; - \;1]}{0.00267}\\\\A = \frac{235.15[(1.00267)^{240}\; - \;1]}{0.00267}\\\\A = \frac{235.15[1.8964\; - \;1]}{0.00267}\\\\A = \frac{235.15[0.8964]}{0.00267}\\\\A = \frac{210.789}{0.00267}[/tex]

A = $78,947.19

Now, we can the amount of money that can be withdrawn each month for 10 years by using this formula:

[tex]A = \frac{P[(1+r)^{12t} - 1]}{r(1+r)^{12t}}[/tex]

Making P the subject of formula, we have:

[tex]P = \frac{A[r(1+r)^{12t}]}{(1+r)^{12t} - 1}[/tex]

Substituting the given parameters into the formula, we have;

[tex]P = \frac{78,947.19[0.00267(1+0.00267)^{12 \times 10}]}{(1+0.00267)^{12 \times 10} - 1}\\\\P = \frac{78,947.19[0.00267(1.3771)]}{1.3771 - 1}\\\\P = \frac{290.278}{0.3771 }[/tex]

P = $769.27

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