SOLUTION: 1)If I invest $x at 8% and $y at 9% my annual income is $430. Had I invested $x at 9% and $y at 9% my annual income would have been $420. Find x and y.
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-> SOLUTION: 1)If I invest $x at 8% and $y at 9% my annual income is $430. Had I invested $x at 9% and $y at 9% my annual income would have been $420. Find x and y.
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Question 852780: 1)If I invest $x at 8% and $y at 9% my annual income is $430. Had I invested $x at 9% and $y at 9% my annual income would have been $420. Find x and y. Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! 1)If I invest $x at 8% and $y at 9% my annual income is $430.
Had I invested $x at 9% and $y at 9% my annual income would have been $420. Find x and y.
Equations:
8x + 9y = 43000 cents
9x + 9y = 42000 cents
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Subtract and solve for "x":
x = a negative 1000.
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Why::
The 8% and 9% give you 430
The 9% and 9% would have to give you a higher number, not 420.
Cheers,
Stan H.
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