Question 1004645
Solve for r:
500(1+r)^20=19500
<pre>{{{(1 + r)^20 = 19500/500}}}
{{{(1 + r)^20 = 39}}}
{{{1 + r = 39^(1/20)}}} -------- Taking the {{{20^(th)}}} root, or raising both sides to the {{{(1/20)^(th)}}} power
{{{r = 39^(1/20) - 1}}} -------- Exact value
{{{highlight_green(r = 0.201028)}}} -------- Approximate value

Since this appears to be a rate (r), only the positive solution is given