SOLUTION: marsha invested part of 18,000.00 at 16% and the remainder at 20%. Her total income from these two investments was $3120.00 how much was invested?

SOLUTION: marsha invested part of 18,000.00 at 16% and the remainder at 20%. Her total income from these two investments was $3120.00 how much was invested?

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Question 220057: marsha invested part of 18,000.00 at 16% and the remainder at 20%. Her total income from these two investments was $3120.00 how much was invested?
Answer by rfer(16322) (Show Source): You can put this solution on YOUR website!
.16x+.2(18000-x)=3120
.16+3600-.2x=3120
-.04x=-480
x=12000 at 16%
6000 at 20%
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