document.write( "Question 662108: Stacey brought 45 six cents stamps and eight cents stamps . She paid 3.00 for them. How many of each did she buy? rickeycol@yahoo.com \n" ); document.write( "

Algebra.Com's Answer #411924 by mananth(16946) $\"\"$ $\"About$

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x 6 cent stamps
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\n" ); document.write( "6 x + 8 y = 300 .............1
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\n" ); document.write( "1 x + 1 y = 45 .............2
\n" ); document.write( "Eliminate y
\n" ); document.write( "multiply (1)by -1
\n" ); document.write( "Multiply (2) by 8
\n" ); document.write( "-6 x -8 y = -300
\n" ); document.write( "8 x + 8 y = 360
\n" ); document.write( "Add the two equations
\n" ); document.write( "2 x = 60
\n" ); document.write( "/ 2
\n" ); document.write( "x = 30
\n" ); document.write( "plug value of x in (1)
\n" ); document.write( "6 x + 8 y = 300
\n" ); document.write( "180 + 8 y = 300
\n" ); document.write( " 8 y = 300 -180
\n" ); document.write( " 8 y = 120
\n" ); document.write( " y = 15
\n" ); document.write( " 30 6 cent stamps
\n" ); document.write( " 15 8 cent stamps
\n" ); document.write( "m.ananth@hotmail.ca
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