document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=551075>Question 551075</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The cost of 12 oranges and 7 apples is $5.36. Eight oranges and 5 apples cost $3.68. Find the cost of each orange and each apple. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #359354 by </B><A HREF=/tutors/aboutme.mpl?userid=Maths68><B>Maths68(1474)</B></A><img src=\"/images/stars/stars-12.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Maths68><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=Maths68><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=359354\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Let<BR>\n" );
document.write( "Cost of one orange = r<BR>\n" );
document.write( "Cost of one apple = a\r<BR>\n" );
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document.write( "12r+7a=5.36..........(1)<BR>\n" );
document.write( "8r+5a=3.68...........(2)\r<BR>\n" );
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document.write( "Multiply (1) by 8 and (2) by 12 then subtract(2) from (1)<BR>\n" );
document.write( "96r+56a=42.88<BR>\n" );
document.write( "-96r-60a=-44.16<BR>\n" );
document.write( "---------------<BR>\n" );
document.write( "-4a=-1.28<BR>\n" );
document.write( "-4a/-4=-1.28/-4<BR>\n" );
document.write( "a=0.32<BR>\n" );
document.write( "Put the value of a in (2)<BR>\n" );
document.write( "8r+5a=3.68...........(2)<BR>\n" );
document.write( "8r+5(0.38)=3.68<BR>\n" );
document.write( "8r+1.6=3.68<BR>\n" );
document.write( "8r=3.68-1.6<BR>\n" );
document.write( "8r=2.08<BR>\n" );
document.write( "8r/8=2.08/8<BR>\n" );
document.write( "r=0.26\r<BR>\n" );
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document.write( "Cost of one orange = r = 0.26<BR>\n" );
document.write( "Cost of one apple = a = 0.32\r<BR>\n" );
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document.write( "Check<BR>\n" );
document.write( "=====<BR>\n" );
document.write( "The cost of 12 oranges and 7 apples is $5.36<BR>\n" );
document.write( "12r+7a=5.36..........(1)<BR>\n" );
document.write( "12(0.26)+7(0.32)=5.36<BR>\n" );
document.write( "3.12+2.24=5.36<BR>\n" );
document.write( "5.36=5.36<BR>\n" );
document.write( "Eight oranges and 5 apples cost $3.68<BR>\n" );
document.write( "8r+5a=3.68...........(2)<BR>\n" );
document.write( "8(0.26)+5(0.32)=3.68<BR>\n" );
document.write( "2.08+1.60=3.68<BR>\n" );
document.write( "3.68=3.68\r<BR>\n" );
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document.write( " </SPAN>\n" );
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