document.write( "Question 239280: Little Johnny invested $10,000. He put part of it in a bank at 5 percent interest. He put the remainder in bonds which pay a 9 percent annual return. How much did he invest in each method (savings bank and bond) if his annual income from the two investments was $660? \n" ); document.write( "
Algebra.Com's Answer #175698 by stanbon(75887)\"\" \"About 
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Little Johnny invested $10,000. He put part of it in a bank at 5 percent interest. He put the remainder in bonds which pay a 9 percent annual return. How much did he invest in each method (savings bank and bond) if his annual income from the two investments was $660?
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\n" ); document.write( "Equation:
\n" ); document.write( "Quantity Eq::: x + y = 10000
\n" ); document.write( "Interest Eq::0.05x+0.09y = 660
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\n" ); document.write( "Multiply thru the 1st equation by 5:
\n" ); document.write( "Multiply thru the 2nd equation by 100:
\n" ); document.write( "5x + 5y = 50000
\n" ); document.write( "5x + 9y = 66000
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\n" ); document.write( "Subtract the 1st from the 2nd and solve for \"y\":
\n" ); document.write( "4y = 16000
\n" ); document.write( "y = $4000 (amount invested at 5%)
\n" ); document.write( "---
\n" ); document.write( "Since x+y = 10000, x = $6000 (amount invested at 9%)
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H. \n" ); document.write( "
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