document.write( "Question 901648: Joni Received $25,000 as part of a settlement in a class action lawsuit. She invested some money at 10% and the rest at a 9% simple interest rate. If her total annual income from these two investments was $2,430, how much did she invest at each rate? \n" ); document.write( "
Algebra.Com's Answer #546832 by mananth(16946)\"\" \"About 
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Part I 10.00% per annum ------------- Amount invested =x
\n" ); document.write( "Part II 9.00% per annum ------------ Amount invested = y
\n" ); document.write( " 25000
\n" ); document.write( "Interest----- 2340.00
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\n" ); document.write( "Part I 10.00% per annum ---x
\n" ); document.write( "Part II 9.00% per annum ---y
\n" ); document.write( "Total investment
\n" ); document.write( "x + 1 y= 25000 -------------1
\n" ); document.write( "Interest on both investments
\n" ); document.write( "10.00% x + 9.00% y= 2340
\n" ); document.write( "Multiply by 100
\n" ); document.write( "10 x + 9 y= 234000.00 --------2
\n" ); document.write( "Multiply (1) by -10
\n" ); document.write( "we get
\n" ); document.write( "-10 x -10 y= -250000.00
\n" ); document.write( "Add this to (2)
\n" ); document.write( "0 x -1 y= -16000
\n" ); document.write( "divide by -1
\n" ); document.write( " y = 16000
\n" ); document.write( "Part I 10.00% $ 9000
\n" ); document.write( "Part II 9.00% $ 16000
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\n" ); document.write( "CHECK
\n" ); document.write( "9000 --------- 10.00% ------- 900.00
\n" ); document.write( "16000 ------------- 9.00% ------- 1440.00
\n" ); document.write( "Total -------------------- 2340.00
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\n" ); document.write( "m.ananth@hotmail.ca
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