document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=676682>Question 676682</A>: <I><SPAN STYLE=\"word-break: break-all;\"> there are 300 marbles in a jar that contains only blue and red marbles. the number of blue marbles is 20 less than 4 times the number of red marbles. how many red marbles are in the jar? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #420459 by </B><A HREF=/tutors/aboutme.mpl?userid=rm29924><B>rm29924(97)</B></A><img src=\"/images/stars/stars-08.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=rm29924><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=rm29924><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=420459\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Let x = the number of red marbles<BR>\n" );
document.write( "4x-20 = the number of blue marbles<BR>\n" );
document.write( "x+4x-20=300<BR>\n" );
document.write( "5x-20=300<BR>\n" );
document.write( "add 20 to both sides<BR>\n" );
document.write( "5x=320<BR>\n" );
document.write( "divide both sides by 5<BR>\n" );
document.write( "x=64\r<BR>\n" );
document.write( "\n" );
document.write( "there are 64 red marbles in the jar\r<BR>\n" );
document.write( "\n" );
document.write( "check answer by plugging it into the original equation </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );