Question 188416
Let {{{x}}}= the first amount invested @ 7%
given:
{{{.07x + .07*(3x + 39000) = 39050}}}
{{{.07x + .21x + 2730 = 39050}}}
{{{.28x = 36320}}}
{{{x = 129714}}}
{{{3x + 39000 = 3*129714 + 39000}}}
{{{3*129714 + 39000 = 428143}}}
The amounts invested were:
$129,714 and $428,143