document.write( "Question 179512: I have been at this math problem for quiet a while now. I would really like it if you can help me out. The answer may be so easy to get, but I just can't figure it out. Please help. \r
\n" ); document.write( "\n" ); document.write( "The word problem is as followed:
\n" ); document.write( "Mr. X invested an amount for 7% and twice that amount for 8%. At the end of the year the income was $11500. What was the amount invested at 7%? amount invested at 8%?\r
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\n" ); document.write( "\n" ); document.write( "Thanks so much .. your help is greatly appreciated!
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Algebra.Com's Answer #134460 by ankor@dixie-net.com(22740)\"\" \"About 
You can put this solution on YOUR website!
Mr. X invested an amount for 7% and twice that amount for 8%. At the end of the
\n" ); document.write( " year the income was $11500. What was the amount invested at 7%? amount invested
\n" ); document.write( " at 8%?
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\n" ); document.write( "let x = amt invested at 7%
\n" ); document.write( "then
\n" ); document.write( "2x = amt invested at 8%
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\n" ); document.write( ".07x + .08(2x) = 11500
\n" ); document.write( ".07x + .16x = 11500
\n" ); document.write( ".23x = 11500
\n" ); document.write( "x = \"11500%2F.23\"
\n" ); document.write( "x = $50,000 invested at 7%
\n" ); document.write( "and, obviously, $100,000 invested at 8%
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\n" ); document.write( "Check by finding the interest of each
\n" ); document.write( ".07 * 50000 = 3500
\n" ); document.write( ".08 * 100000= 8000
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\n" ); document.write( "for a total = 11500
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