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March 31, 2015

March 31, 2015

Posted by **stuck on this one ?** on Saturday, April 30, 2011 at 11:40pm.

- math -
**MathMate**, Sunday, May 1, 2011 at 6:54amInterest, i=9%=0.09 p.a.

Future value, S

Ordinary annuity for 6 years,

n=6

yearly payment, R = $20,000

Find future value when child will be 24 years old:

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

= $20,000*(1.09^6-1)/0.09

= $20,000*(7.523335)

= $150,466.69

Present value (when child is 17)

P= S/(1+i)^7

= $82310.43

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