SOLUTION: an invested 12000 i two accounts. one investment earned 7 % annual simple interest and the other investment earned 6.5% annual simple interest. the amount of interest for 1 year wa

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Question 237157: an invested 12000 i two accounts. one investment earned 7 % annual simple interest and the other investment earned 6.5% annual simple interest. the amount of interest for 1 year was 820. How much was invested at 6.5 %
Answer by rfer(16322) About Me  (Show Source):
You can put this solution on YOUR website!
.07x+.065(12000-x)=820
.07x+780-.065x=820
.005x=40
x=$8000 at 7%
$4000 at 6.5%