SOLUTION: geraldine has twice as much money invested at 5% simple annual interest as she does 4%. if her yearly income from these two investments is 350$, how much does she have nvested?

Question 275132: geraldine has twice as much money invested at 5% simple annual interest as she does 4%. if her yearly income from these two investments is 350$, how much does she have nvested?
Found 2 solutions by richwmiller, josmiceli:
Answer by richwmiller(17219) (Show Source): You can put this solution on YOUR website!
2x*.05+.04x=350
x=2500 at 4%
2x=5000 at5%
$7500 total invested

Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Let =amount invested at 5%
Let =amount invested at 4%
given:
(1)
(2)
Substitute (1) in (2)
(2)

and

She has $3750 invested
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