document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=187302>Question 187302</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Please help me solve this linear equation problem !!!\r<BR>\n" );
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document.write( "A teacher gives out a test 0f 30 problems. Each computation problem is worth 3 points.Each word problem is worth 5 points. The total of points you can receive on the test is 110 points. How many computation problem are there? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #140397 by </B><A HREF=/tutors/aboutme.mpl?userid=dukesmart><B>dukesmart(20)</B></A><img src=\"/images/stars/stars-06.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=dukesmart><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/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=140397\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Put x= number of tests of computation problems\r<BR>\n" );
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document.write( "Put y= number of tests of word problems\r<BR>\n" );
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document.write( "we create the 2 equations as follows:<BR>\n" );
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document.write( "x + y = 30..........(1)<BR>\n" );
document.write( "3x + 5y = 110.......(2)\r<BR>\n" );
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document.write( "multiply (1) to 3 then (1) will become 3x + 3y = 90 .....(3)\r<BR>\n" );
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document.write( "take (2) subtract (3) we have:<BR>\n" );
document.write( " 3x-3x+5y-3y=110-90 <BR>\n" );
document.write( "         2y = 20<BR>\n" );
document.write( "          y =10 <BR>\n" );
document.write( "then x=30-10<BR>\n" );
document.write( "     x=20<BR>\n" );
document.write( "answers: we have 20 computation problems .<BR>\n" );
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