SOLUTION: Jarvis invested some money at 14% interest. Jarvis also invested $190 more than 2 times that amount at 11%. How much is invested at each rate if Jarvis receives $923.42 in interest

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Question 1026241: Jarvis invested some money at 14% interest. Jarvis also invested $190 more than 2 times that amount at 11%. How much is invested at each rate if Jarvis receives $923.42 in interest after one year
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
Jarvis invested some money at 14% interest. Jarvis also invested $190 more than 2 times that amount at 11%. How much is invested at each rate if Jarvis receives $923.42 in interest after one year
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e = 2f + 190
14f + 11e = 92342
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Rearrange::
14f - 7e = -7*190
14f + 11e = 92342
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Subtract and solve for "e"::
18e = 92342+7*190
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e = 5204 dollars (amt. invested at 11%)
Solve for "f":
2f = e-190
2f = 5204-190
2f = 514
f = 257 dollars (amt. invested at 14%)
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Cheers,
Stan H.
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