document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=310558>Question 310558</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Shanon and Piper are on the golf team.  Shanon buys 10 cheap golf balls and 7 expensive ones for $31.75.   Piper buys 8 cheap and 5 expensive balls for $23.75.  Find the prices of the two kinds of golf balls. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #222076 by </B><A HREF=/tutors/aboutme.mpl?userid=mananth><B>mananth(16946)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=mananth><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/cgi-bin/show-face.mpl?user=mananth><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=222076\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> cheap ball be $x<BR>\n" );
document.write( "expensive ball be $y\r<BR>\n" );
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document.write( "Shanon - cost equation\r<BR>\n" );
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document.write( "10x+7y= 31.75<BR>\n" );
document.write( "Piper - cost equation<BR>\n" );
document.write( "8x+5y= 23.75\r<BR>\n" );
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document.write( "8(10x+7y)-10(8x+5y)= 8*31.75 - 10*23.75\r<BR>\n" );
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document.write( "80x+56y-80x-50y=252-237.5<BR>\n" );
document.write( "6y=14.5<BR>\n" );
document.write( "y=2.42<BR>\n" );
document.write( "Plug the value of in one equation\r<BR>\n" );
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document.write( "10x+7*2.42 =31.75<BR>\n" );
document.write( "10x= 31.75-16.94<BR>\n" );
document.write( "10x= 14.81<BR>\n" );
document.write( "x=1.48<BR>\n" );
document.write( "CHECK\r<BR>\n" );
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document.write( "10*1.48+7*2.42=31.74\r<BR>\n" );
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document.write( " </SPAN>\n" );
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