document.write( "Question 471409: Cameron has saved $18,000 and plans to invest it in two accounts: a savings account that pays 5.2% annual interest and a stock that promises a 9% annual return. If Cameron earns $1,430 in interest after one ear, how much did she invest in each account? \n" ); document.write( "

Algebra.Com's Answer #323322 by mananth(16946) $\"\"$ $\"About$

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Investment I 5.20% per annum
\n" ); document.write( "Investment II 9.00% per annum
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\n" ); document.write( "x + y 18000 ------------------------1
\n" ); document.write( "5.20% x + 9.00% y = $1,430.00
\n" ); document.write( "Multiply by 100
\n" ); document.write( "5.2 x + 9 y = $143,000.00 --------2
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\n" ); document.write( "Multiply (1) by -5.2
\n" ); document.write( "we get
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\n" ); document.write( "-5.2 x -5.2 y = -93600.00
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\n" ); document.write( "Add this to (2)
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\n" ); document.write( "0 x 3.8 y = $49,400.00
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\n" ); document.write( "divide by 3.8
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\n" ); document.write( " y = $13,000.00 investment at 9.00%
\n" ); document.write( "Balance $5,000.00 investment at 5.20%
\n" ); document.write( "CHECK
\n" ); document.write( "$5,000.00-------$260.00
\n" ); document.write( "$13,000.00------$1,170.00
\n" ); document.write( "Total--------- $1,430.00
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