document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=732593>Question 732593</A>: <I><SPAN STYLE=\"word-break: break-all;\"> if one water pipe fills a swimming pool in x h. A second pipe takes 3h longer . The two pipes together fill the pool in 2h. How long will it take each pipe to fill the swimming pool separately? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #447949 by </B><A HREF=/tutors/aboutme.mpl?userid=josmiceli><B>josmiceli(19441)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=josmiceli><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=josmiceli><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=447949\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The rate of filling for 1st pipe is:<BR>\n" );
document.write( "( 1 pool filled / x hrs )<BR>\n" );
document.write( "The rate of filling for 2nd pipe is:<BR>\n" );
document.write( "( 1 pool filled / x + 3 hrs )<BR>\n" );
document.write( "Add their rates of filling to get  the<BR>\n" );
document.write( "rate with both pipes open<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+1%2Fx+%2B+1%2F%28+x%2B3+%29+=+1%2F2+ ALIGN=MIDDLE  ALT=\"+1%2Fx+%2B+1%2F%28+x%2B3+%29+=+1%2F2+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Multiply both sides by <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+2%2Ax%2A%28+x%2B3+%29+ ALIGN=MIDDLE  ALT=\"+2%2Ax%2A%28+x%2B3+%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+2%2A%28+x%2B3+%29+%2B+2x+=+x%2A%28+x%2B3+%29+ ALIGN=MIDDLE  ALT=\"+2%2A%28+x%2B3+%29+%2B+2x+=+x%2A%28+x%2B3+%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+2x+%2B+6+%2B+2x++=+x%5E2+%2B+3x+ ALIGN=MIDDLE  ALT=\"+2x+%2B+6+%2B+2x++=+x%5E2+%2B+3x+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+4x+%2B+6+=+x%5E2+%2B+3x+ ALIGN=MIDDLE  ALT=\"+4x+%2B+6+=+x%5E2+%2B+3x+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+x%5E2+-+x+-+6+=+0+ ALIGN=MIDDLE  ALT=\"+x%5E2+-+x+-+6+=+0+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Use quadratic formula<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+x+=+%28-b+%2B-+sqrt%28+b%5E2+-+4%2Aa%2Ac+%29%29+%2F+%282%2Aa%29+ ALIGN=MIDDLE  ALT=\"+x+=+%28-b+%2B-+sqrt%28+b%5E2+-+4%2Aa%2Ac+%29%29+%2F+%282%2Aa%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+a+=+1+ ALIGN=MIDDLE  ALT=\"+a+=+1+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+b+=+-1+ ALIGN=MIDDLE  ALT=\"+b+=+-1+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+c+=+-6+ ALIGN=MIDDLE  ALT=\"+c+=+-6+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+x+=+%28-%28-1%29+%2B-+sqrt%28+%28-1%29%5E2+-+4%2A1%2A%28-6%29+%29%29+%2F+%282%2A1%29+ ALIGN=MIDDLE  ALT=\"+x+=+%28-%28-1%29+%2B-+sqrt%28+%28-1%29%5E2+-+4%2A1%2A%28-6%29+%29%29+%2F+%282%2A1%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+x+=+%28+1+%2B-+sqrt%28+1+%2B+24%29%29+%2F+2+ ALIGN=MIDDLE  ALT=\"+x+=+%28+1+%2B-+sqrt%28+1+%2B+24%29%29+%2F+2+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+x+=+%28+1+%2B-+sqrt%28+25%29%29+%2F+2+ ALIGN=MIDDLE  ALT=\"+x+=+%28+1+%2B-+sqrt%28+25%29%29+%2F+2+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+x+=+%28+1+%2B+5+%29+%2F+2+ ALIGN=MIDDLE  ALT=\"+x+=+%28+1+%2B+5+%29+%2F+2+\"   DISABLED_style= \"max-width:90%; height:auto;\" > ( can't use negative sqrt )<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+x+=+3+ ALIGN=MIDDLE  ALT=\"+x+=+3+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+x+%2B+3+=+6+ ALIGN=MIDDLE  ALT=\"+x+%2B+3+=+6+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "The 1st pipe will take 3 hrs to fill pool<BR>\n" );
document.write( "The 2nd pipe will take 6 hrs to fill pool<BR>\n" );
document.write( "check:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+1%2Fx+%2B+1%2F%28+x%2B3+%29+=+1%2F2+ ALIGN=MIDDLE  ALT=\"+1%2Fx+%2B+1%2F%28+x%2B3+%29+=+1%2F2+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+1%2F3+%2B+1%2F%28+3%2B3+%29+=+1%2F2+ ALIGN=MIDDLE  ALT=\"+1%2F3+%2B+1%2F%28+3%2B3+%29+=+1%2F2+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+1%2F3+%2B+1%2F6+=+1%2F2+ ALIGN=MIDDLE  ALT=\"+1%2F3+%2B+1%2F6+=+1%2F2+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+2%2F6+%2B+1%2F6+=+3%2F6+ ALIGN=MIDDLE  ALT=\"+2%2F6+%2B+1%2F6+=+3%2F6+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+3%2F6+=+3%2F6+ ALIGN=MIDDLE  ALT=\"+3%2F6+=+3%2F6+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "OK<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );