Question 936143
<pre>
Let A = Periodic amount
    R = Interest rate
    N = Number of intervals
    T = duration of payment
   FV = Future Value
</pre>
{{{FV = A(((1+r/n)^(nt)-1)/(r/n))}}}
{{{FV = 300(((1+.14/12)^((12)(20))-1)/(.14/12))}}}
{{{FV = 300(((1.011666667)^240-1)/.011666667)}}}
{{{FV = 300(((16.180271338)-1)/.011666667)}}}
{{{FV = 300(15.180271338/.011666667)}}}
{{{FV = 300(1301.16607751)}}}
{{{FV = 390349.82}}}
He saved $390349.82 in 20 years.