Question 985260
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A=amount Alex earns; M=amount Omar earns=A+$200; D=amount Donna earns=2M=2A+$400
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A+M+D=$3320
A+(A+$200)+(2A+$400)=$3320
4A=$2720
A=$680 Alex earns $680 per month.
M=A+$200=$680+$200=$880 ANSWER: Omar earns $880 per month.
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CHECK:
D=2M=2($880)=$1760
A+M+D=$3320
$680+$880+$1760=$3320
$3320=$3320