Suppose that a family wants to start a college fund for their child. if they can get a rate of 5.2%, compounded monthly, and want the fund to have a value of $55,500 after 20 years, how much should they deposit monthly? assume an ordinary annuity and round to the nearest cent. a. $131.93 b. $2,662.49 c. $1,643.30 d. $3,446.64

Respuesta :

The ordinary annuity is $135.40

We have given that the

P=55500$

rate(r)=5.2%

time (t)=20 years

What is the formula for the ordinary annuity ?

The formula for ordinary annuity is:

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

Where,P - future value

r - rate

A - annuity payment

n - the number of years

Use the given value in the above formula of ordinary annuity so we get,

[tex]55000 = A ((1 + 0.052)^{20} - 1) / 0.052[/tex]

[tex]55000 = A * ((1.052)^{20} - 1) / 0.052[/tex]

[tex]55000 = A * (2.76 - 1) / 0.052[/tex]

[tex]55000 = A * 1.76 / 0.052[/tex]

[tex]55000 = A * 33.85[/tex]

[tex]A = 55000 / 33.85[/tex]

[tex]A = 1624.82[/tex]

Therefore the annual payment(A)=1624.82 and since year has 12 months, monthly payment is

[tex]1624.82 / 12 = $135.40[/tex]

Therefore we get the ordinary annuity is $135.40

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