document.write( "Question 766099: write a pair of simultaneous equations and use them to solve:\r
\n" ); document.write( "\n" ); document.write( "A wallet contains 34 notes, all of which are either $5 or $10 notes. the total value of the money is $285. how many $10 notes are there?
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Algebra.Com's Answer #466657 by mananth(16946)\"\" \"About 
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x= Number of $10 notes
\n" ); document.write( "y= Number of $5 notes
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\n" ); document.write( "1 x + 1 y = 34 .............1
\n" ); document.write( "Total value
\n" ); document.write( "10 x + 5 y = 285 .............2
\n" ); document.write( "Eliminate y
\n" ); document.write( "multiply (1)by -5
\n" ); document.write( "Multiply (2) by 1
\n" ); document.write( "-5 x -5 y = -170
\n" ); document.write( "10 x + 5 y = 285
\n" ); document.write( "Add the two equations
\n" ); document.write( "5 x = 115
\n" ); document.write( "/ 5
\n" ); document.write( "x = 23
\n" ); document.write( "plug value of x in (1)
\n" ); document.write( "1 x + 1 y = 34
\n" ); document.write( "23 + y = 34
\n" ); document.write( " y = 34-23
\n" ); document.write( " y = 11
\n" ); document.write( " y = 11
\n" ); document.write( "x= 23 Number of $10 notes
\n" ); document.write( "y= 11 Number of $5 notes
\n" ); document.write( "m.ananth@hotmail.ca
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