document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=523911>Question 523911</A>: <I><SPAN STYLE=\"word-break: break-all;\"> dan washes 3 cars in 2hrs. sue washes 3 cars in 1.5 hrs. how long to wash 3 cars together? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #347496 by </B><A HREF=/tutors/aboutme.mpl?userid=htmentor><B>htmentor(1343)</B></A><img src=\"/images/stars/stars-12.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=htmentor><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=htmentor><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=347496\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> dan washes 3 cars in 2hrs. sue washes 3 cars in 1.5 hrs. how long to wash 3 cars together?<BR>\n" );
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document.write( "Together they can wash 3 cars/2 hrs + 3 cars/1.5 hrs = 3/2 + 2 = 7/2 cars/hr<BR>\n" );
document.write( "So it takes them 1/(7/2) = 2/7 hrs/car<BR>\n" );
document.write( "So the time to wash 3 cars = (2/7)*3 = 6/7 hrs </SPAN>\n" );
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