document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=919187>Question 919187</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Bianca travelled 1200km.if her average speed had been 5 more km per hour,she could have made the trip in 12 hours less time.find bianca s average speed </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #557530 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=557530\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Let <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+s+ ALIGN=MIDDLE  ALT=\"+s+\"   DISABLED_style= \"max-width:90%; height:auto;\" > = Bianca's average speed<BR>\n" );
document.write( "Let <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+t+ ALIGN=MIDDLE  ALT=\"+t+\"   DISABLED_style= \"max-width:90%; height:auto;\" > = her time in hrs to travel 1200nkm<BR>\n" );
document.write( "----------------------<BR>\n" );
document.write( "(1) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+1200+=+s%2At+ ALIGN=MIDDLE  ALT=\"+1200+=+s%2At+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+1200+=+%28+s%2B5+%29%2A%28+t+-+12+%29+ ALIGN=MIDDLE  ALT=\"+1200+=+%28+s%2B5+%29%2A%28+t+-+12+%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "-----------------------------<BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+1200+=+s%2At+%2B+5t+-+12s+-+60+ ALIGN=MIDDLE  ALT=\"+1200+=+s%2At+%2B+5t+-+12s+-+60+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+1200+=+t%2A%28+s%2B5+%29+-+12s+-+60+ ALIGN=MIDDLE  ALT=\"+1200+=+t%2A%28+s%2B5+%29+-+12s+-+60+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "and<BR>\n" );
document.write( "(1) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+t+=+1200%2Fs+ ALIGN=MIDDLE  ALT=\"+t+=+1200%2Fs+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+1200+=+%28+1200%2Fs+%29%2A%28+s%2B5+%29+-+12s+-+60+ ALIGN=MIDDLE  ALT=\"+1200+=+%28+1200%2Fs+%29%2A%28+s%2B5+%29+-+12s+-+60+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+1200+=+1200+%2B+6000%2Fs+-+12s+-+60+ ALIGN=MIDDLE  ALT=\"+1200+=+1200+%2B+6000%2Fs+-+12s+-+60+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+6000%2Fs+=+12s+%2B+60+ ALIGN=MIDDLE  ALT=\"+6000%2Fs+=+12s+%2B+60+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+6000+=+12s%5E2+%2B+60s+ ALIGN=MIDDLE  ALT=\"+6000+=+12s%5E2+%2B+60s+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+s%5E2+%2B+5s+=+500+ ALIGN=MIDDLE  ALT=\"+s%5E2+%2B+5s+=+500+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Complete the square<BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+s%5E2+%2B+5s+%2B+%285%2F2%29%5E2+=+500+%2B+%285%2F2%29%5E2+ ALIGN=MIDDLE  ALT=\"+s%5E2+%2B+5s+%2B+%285%2F2%29%5E2+=+500+%2B+%285%2F2%29%5E2+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+s%5E2+%2B+5s+%2B+25%2F4+=+500+%2B+25%2F4+ ALIGN=MIDDLE  ALT=\"+s%5E2+%2B+5s+%2B+25%2F4+=+500+%2B+25%2F4+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+%28+s+%2B+5%2F2+%29%5E2+=+2025%2F4+ ALIGN=MIDDLE  ALT=\"+%28+s+%2B+5%2F2+%29%5E2+=+2025%2F4+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+%28+s+%2B+5%2F2+%29%5E2+=+%28+45%2F2+%29%5E2+ ALIGN=MIDDLE  ALT=\"+%28+s+%2B+5%2F2+%29%5E2+=+%28+45%2F2+%29%5E2+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Take the square root of both sides<BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+s+%2B+5%2F2+=+45%2F2+ ALIGN=MIDDLE  ALT=\"+s+%2B+5%2F2+=+45%2F2+\"   DISABLED_style= \"max-width:90%; height:auto;\" > ( only the positive root works here )<BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+s+=+40%2F2+ ALIGN=MIDDLE  ALT=\"+s+=+40%2F2+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+s+=+20+ ALIGN=MIDDLE  ALT=\"+s+=+20+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Her average speed is 20 km/hr<BR>\n" );
document.write( "check:<BR>\n" );
document.write( "(1) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+t+=+1200%2Fs+ ALIGN=MIDDLE  ALT=\"+t+=+1200%2Fs+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(1) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+t+=+1200%2F20+ ALIGN=MIDDLE  ALT=\"+t+=+1200%2F20+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(1) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+t+=+60+ ALIGN=MIDDLE  ALT=\"+t+=+60+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "and<BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+1200+=+%28+s%2B5+%29%2A%28+t+-+12+%29+ ALIGN=MIDDLE  ALT=\"+1200+=+%28+s%2B5+%29%2A%28+t+-+12+%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+1200+=+%28+20%2B5+%29%2A%28+60+-+12+%29+ ALIGN=MIDDLE  ALT=\"+1200+=+%28+20%2B5+%29%2A%28+60+-+12+%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+1200+=+25%2A48+ ALIGN=MIDDLE  ALT=\"+1200+=+25%2A48+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "(2) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+1200+=+1200+ ALIGN=MIDDLE  ALT=\"+1200+=+1200+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "OK\r<BR>\n" );
document.write( "\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );