Question 1150337
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I will assume that Yoshi deposits $400 at the end of each month.
Then it is a classic Ordinary Annuity saving plan. The general formula is 


    FV = {{{P*(((1+r)^n-1)/r)}}},    (1)


where  FV is the future value of the account;  P is the monthly payment (deposit); r is the monthly percentage yield presented as a decimal; 
n is the number of deposits (= the number of years multiplied by 12, in this case).


Under the given conditions, P = 400;  r = 0.053/12.  Starting from the age of 30 years to the end of 64-th years 
(to the 65-th birthday) n = 35 years and  12*35 = 420.  So, according to the formula (1), at the end of the 64-th year 
(to the 65-th birthday) the amount at the account is 


    FV = {{{400*(((1+0.053/12)^(12*35)-1)/((0.053/12)))}}} = {{{400*(((1+0.053/12)^420-1)/((0.053/12)))}}} = $485945.21.    <U>ANSWER</U>


To any other birthday, calculate the future value at the account by the same way.
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On Ordinary Annuity saving plans, &nbsp;see the lessons

&nbsp;&nbsp;&nbsp;&nbsp;- <A HREF=http://www.algebra.com/algebra/homework/Sequences-and-series/Ordinary-Annuity-saving-plans-and-geometric-progressions.lesson>Ordinary Annuity saving plans and geometric progressions</A>

&nbsp;&nbsp;&nbsp;&nbsp;- <A HREF=https://www.algebra.com/algebra/homework/Sequences-and-series/Solved-problem-on-Ordinary-Annuity-saving-plans.lesson>Solved problems on Ordinary Annuity saving plans</A>

in this site.


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When you learn from these lessons, &nbsp;you will be able to do similar calculations in semi-automatic mode.