document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1172336>Question 1172336</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Marie can paint a room in 9 hours. If Ana helps, it takes them 7 hours. Without help, how long would it take Ana to complete this job? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #797341 by </B><A HREF=/tutors/aboutme.mpl?userid=Boreal><B>Boreal(15235)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Boreal><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=Boreal><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=797341\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> In 7 hours Marie paints the equivalent of 7/9 of the room.<BR>\n" );
document.write( "So Ana paints 2/9 the equivalent in 7 hours.<BR>\n" );
document.write( "(2/9)/7=1/x<BR>\n" );
document.write( "7=(2/9)*x<BR>\n" );
document.write( "x=31.5 hours for Ana.<BR>\n" );
document.write( "Can check (x/9)+(x/31.5)=1<BR>\n" );
document.write( "31.5x+9x=283.5, multiplying by 283.5<BR>\n" );
document.write( "40.5x=283.5<BR>\n" );
document.write( "x=7\r<BR>\n" );
document.write( "\n" );
document.write( "It will take Ana 31.5 hours alone. </SPAN>\n" );
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