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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