document.write( "Question 576724: Two sisters shared a $36 5000 inheritance. Teri invested her share at 9%, while Tammy obtained 8.5% interest. After on year, their combined interest was 3200. How much did each sister invest? \n" ); document.write( "
Algebra.Com's Answer #369990 by mananth(16946)\"\" \"About 
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I think the inheritance must be $36,500 and not 365,000\r
\n" ); document.write( "\n" ); document.write( "Teri 9.00% per annum ---x
\n" ); document.write( "Tammy 8.50% per annum ---y
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\n" ); document.write( "x+y= 36500 ------------------------1
\n" ); document.write( "9.00%x+8.50%y= 3200
\n" ); document.write( "Multiply by 100
\n" ); document.write( "9x+8.5y=320000.00 --------2
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\n" ); document.write( "Multiply (1) by -9
\n" ); document.write( "we get
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\n" ); document.write( "-9 x -9 y= -328500.00
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\n" ); document.write( "Add this to (2)
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\n" ); document.write( "0 x -0.5 y= = -8500
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\n" ); document.write( "divide by -0.5
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\n" ); document.write( "y=17000 investment at 8.50%
\n" ); document.write( "Balance 19500 investment at 9.00%
\n" ); document.write( "CHECK
\n" ); document.write( "17000 --------- 8.50% ------- 1445.00
\n" ); document.write( "19500 ------- 9.00% ------- 1755.00
\n" ); document.write( "Total -------------- 3200.00
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