Question 1105653
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<pre>
interest + interest       = total interest.


0.04*x   + 0.05*(35000-x) = 1530

0.04x + 0.05*350000 - 0.05x = 1530

-0.01x = 1530 - 0.05*35000 = -220  ====>  x = {{{(-220)/(-0.01)}}} = 22000.


<U>Answer</U>.  $22000 was invested at 4% and the rest $35000 - $22000 = $13000 was invested at 5%.


<U>Check</U>.   0.04*22000 + 0.05*13000 = 1530 dollars.   ! Correct !
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On investment problems, see the lesson

&nbsp;&nbsp;&nbsp;&nbsp;- <A HREF=https://www.algebra.com/algebra/homework/coordinate/lessons/Using-systems-of-equations-to-solve-problems-on-investment.lesson>Using systems of equations to solve problems on investment</A>

in this site.