document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=925866>Question 925866</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Pipe A can fill a tank in 25 minutes. Pipe B can fill the same tank in 20 minutes. To fill the empty tank, pipe A was opened alone for 3 minutes, and, after that, pipe B was also opened. How much time will it take for both pipes, A and B to finish filling the tank? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #561840 by </B><A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><B>ankor@dixie-net.com(22740)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><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=ankor@dixie-net.com><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=561840\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Pipe A can fill a tank in 25 minutes.<BR>\n" );
document.write( " Pipe B can fill the same tank in 20 minutes.<BR>\n" );
document.write( " To fill the empty tank, pipe A was opened alone for 3 minutes, and, after that, pipe B was also opened.<BR>\n" );
document.write( " How much time will it take for both pipes, A and B to finish filling the tank?<BR>\n" );
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document.write( "let t = for A & B to finish filling the tank<BR>\n" );
document.write( "let the completed job = 1 (a full tank)<BR>\n" );
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document.write( "A shared work equation<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28%28t%2B3%29%29%2F25 ALIGN=MIDDLE  ALT=\"%28%28t%2B3%29%29%2F25\"   DISABLED_style= \"max-width:90%; height:auto;\" > + <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=t%2F20 ALIGN=MIDDLE  ALT=\"t%2F20\"   DISABLED_style= \"max-width:90%; height:auto;\" > - 1<BR>\n" );
document.write( "multiply equation by 100, cancel the denominators<BR>\n" );
document.write( "4(t+3) + 5t = 100<BR>\n" );
document.write( "4t + 12 + 5t = 100<BR>\n" );
document.write( "4t + 5t = 100 - 12<BR>\n" );
document.write( "9t = 88<BR>\n" );
document.write( "t = 9.78 minutes for A & B to finish filling the tank<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );