SOLUTION: A man invested $2000, part at 8% and part at 6%.He earned $144 from his investments. How much did he invest at 8%?

Question 484699: A man invested $2000, part at 8% and part at 6%.He earned $144 from his investments. How much did he invest at 8%?
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
A man invested $2000, part at 8% and part at 6%.He earned $144 from his investments. How much did he invest at 8%?
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Quantity Equation: e + s = 2000
Interest Equation:0.08e + 0.06s = 144
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Multiply thru the Quantity Equation by 6
Multiply thru the Interest Equation by 100
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6e + 6s = 6*2000
8e + 6s = 100*144
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Subtract and solve for "e":
2e = 2400
e = $1200 (amt. invested at 8%)
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Cheers,
Stan H.
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