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Joan Arlington has twice as much money invested at 5% simple annual interest as she does at 4%. If her yearly income from the two investments is

$224224 ,

how much does she have at each rate?

 Apr 17, 2020
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Let the amount invested @ 4% = F
The amount invested @ 5%       =2F

 

0.04F + 0.10F = 224
0.14F = 224
F = 224 / 0.14


F = $1,600 - amount invested @ 4%
$1,600 * 2 =$3,200 - amount invested @ 5%.

 Apr 17, 2020

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