document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=536363>Question 536363</A>: <I><SPAN STYLE=\"word-break: break-all;\"> solve by graphing<BR>\n" );
document.write( "7x-6y=30<BR>\n" );
document.write( "6y-7y=-30 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #352280 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=352280\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> pipe A cn fill a cistern in 6hrs & pipe B cn fill it in 8hrs. both pipes r opened simultaneously bt after 2hrs pipeA is closed. how many hrs willB take to fill the remaining partbof cistern <BR>\n" );
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document.write( "A time = 6 hrs/job ; rate = 1/6 job/hr<BR>\n" );
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document.write( "B time = 8 hrs/job ; rate = 1/8 job/hr<BR>\n" );
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document.write( "Together rate = 1/6 + 1/8 = (14/48) = 7/24 job/hr<BR>\n" );
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document.write( "Note: work done = rate*time <BR>\n" );
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document.write( "Equation:<BR>\n" );
document.write( "work + work = 1 job<BR>\n" );
document.write( "2(7/24) + (1/8)x = 1<BR>\n" );
document.write( "14 + 3x = 24<BR>\n" );
document.write( "3x = 14<BR>\n" );
document.write( "x = 4 1/3 hrs (time for \"B\" to finish the job)<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
document.write( "================== </SPAN>\n" );
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