document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=701291>Question 701291</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A math test is worth 100 points and has 30 problems. Each problem is worth either 3 points or 4 points. How many 4-point problems 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 #432351 by </B><A HREF=/tutors/aboutme.mpl?userid=jim_thompson5910><B>jim_thompson5910(35256)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=jim_thompson5910><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=432351\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Hint:\r<BR>\n" );
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document.write( "x+y = 30 ---> y = 30-x\r<BR>\n" );
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document.write( "3x+4y = 100\r<BR>\n" );
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document.write( "3x+4(30-x) = 100\r<BR>\n" );
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document.write( "3x+120-4x = 100\r<BR>\n" );
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document.write( "solve for x, then use this to find y </SPAN>\n" );
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