document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=257632>Question 257632</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Sara has a bag with 10 red marbles and 12 white marbles. When she draws out a red marble, she puts the marble back and adds 5 more red marbles. When she draws out a white marble, she puts the marble back and adds 3 more white marbles. After how many rounds of draws, replacements, and additions will the bag contain exactly 43 marbles? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #189542 by </B><A HREF=/tutors/aboutme.mpl?userid=richwmiller><B>richwmiller(17219)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=richwmiller><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=richwmiller><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=189542\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 43=10+5x+12+3y<BR>\n" );
document.write( "43=22+5x+3y<BR>\n" );
document.write( "21=5x+3y<BR>\n" );
document.write( "x=3 y=2<BR>\n" );
document.write( "2 draws of white and 3 draws of red<BR>\n" );
document.write( "or just 7 draws of white and zero red draws <BR>\n" );
document.write( "21-5x=3y<BR>\n" );
document.write( "7-5/3x=y\r<BR>\n" );
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