Posted by **Doran** on Tuesday, November 15, 2011 at 9:02pm.

You intend to create a college fund for your baby. If you can get an interest rate of 5.3% compounded monthly and want the fund to have a value of $123,875 after 17 years, how much should you deposit each month?

$413.01

$7032.70

$319.14

$375.46

- math 140 -
**Steve**, Wednesday, November 16, 2011 at 12:48am
no. of months in 17 years = 204

monthly interest rate = annual rate/12 = 0.44%

So, now just plug in your handy dandy interest formula:

123875 = P*(1.00416666)^204

and solve for P

- math 140 -
**tchrwill**, Wednesday, November 16, 2011 at 11:16am
This is an ordinary annuity where R dollars is deposited in a bank at the end of each month and earning interest compounded monthly.

S(n) = R[(1+i)^n - 1]/i

where R = the monthly deposit, S(n) = the ultimate accumulation, n = the number of periods the deposits are made and i = the decimal interest paid each period.

Therefore, with

S(n) = $123,875

N = 17(12) = 204 and

i = 5.3/(100)12 = .0044166

R = $375.46

- math 140 -
**Anonymous**, Wednesday, August 29, 2012 at 5:01pm
find the sum: 1+2+3+...+40

- math 140 -
**Anonymous**, Wednesday, August 29, 2012 at 5:03pm
find the sum: 1+2+3+...+450

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